MAX9150EUI+ - MAXIM INTEGRATED PRODUCTS

MAX9150

Low-Jitter, 10-Port LVDS Repeater

________________________________________________________________

Maxim Integrated Products

19-1815; Rev 1; 3/09

EVALUATION KIT

AVAILABLE

Ordering Information

PART TEMP. RANGE PIN-PACKAGE

MAX9150EUI -40°C to +85°C 28 TSSOP

100Ω

LVDS

BACKPLANE

OR CABLE

100Ω

100Ω 100Ω

MAX9150 RX

MAX9111

MAX9110

Typical Application Circuit

DO3+

DO3-

DO4+

DO4-

DO5+

DO5-

DO8-

VCC

GND

DO6+

DO6-

DO7+

DO7-

DO8+

DO9-

DO9+

DO10-

DO10+

VCC

GND

RIN-

RIN+

GND

DO1-

DO1+

DO2-

DO2+

TOP VIEW

MAX9150

PWRDN

TSSOP

Pin Configuration

General Description

The MAX9150 low-jitter, 10-port, low-voltage differential

signaling (LVDS) repeater is designed for applications

that require high-speed data or clock distribution while

minimizing power, space, and noise. The device

accepts a single LVDS input and repeats the signal at

10 LVDS outputs. Each differential output drives a total

of 50Ω, allowing point-to-point distribution of signals on

transmission lines with 100Ωterminations on each end.

Ultra-low 120ps (max) peak-to-peak jitter (deterministic

and random) ensures reliable communication in high-

speed links that are highly sensitive to timing error,

especially those incorporating clock-and-data recovery,

or serializers and deserializers. The high-speed switch-

ing performance guarantees 400Mbps data rate and

less than 100ps skew between channels while operat-

ing from a single +3.3V supply.

Supply current at 400Mbps is 160mA (max) and is

reduced to 60µA (max) in low-power shutdown mode.

Inputs and outputs conform to the EIA/TIA-644 LVDS

standard. A fail-safe feature sets the outputs high when

the input is undriven and open, terminated, or shorted.

The MAX9150 is available in a 28-pin TSSOP package.

Refer to the MAX9110/MAX9112 and MAX9111/MAX9113

data sheets for LVDS line drivers and receivers.

________________________Applications

Cellular Phone Base Stations

Add/Drop Muxes

Digital Crossconnects

Network Switches/Routers

Backplane Interconnect

Clock Distribution

Features

♦Ultra-Low 120psp-p (max) Total Jitter

(Deterministic and Random)

♦100ps (max) Skew Between Channels

♦Guaranteed 400Mbps Data Rate

♦60µA Shutdown Supply Current

♦Conforms to EIA/TIA-644 LVDS Standard

♦Single +3.3V Supply

♦Fail-Safe Circuit Sets Output High for Undriven

Inputs

♦High-Impedance LVDS Input when VCC = 0V

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX9150

Low-Jitter, 10-Port LVDS Repeater

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(VCC = +3.0V to +3.6V, RL= 50Ω±1%, |VID|= 0.1V to 1.0V, VCM = |VID / 2|to 2.4V - |VID / 2|, PWRDN = high, TA= -40°C to +85°C,

unless otherwise noted. Typical values are at VCC = +3.3V, TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

VCC to GND...........................................................-0.3V to +4.0V

RIN+, RIN- to GND ................................................-0.3V to +4.0V

PWRDN to GND..........................................-0.3V to (VCC + 0.3V)

DO_+, DO_- to GND..............................................-0.3V to +4.0V

Short-Circuit Duration (DO_+, DO_-) .........................Continuous

Continuous Power Dissipation (TA= +70°C)

28-Pin TSSOP (derate 12.8mW/°C above +70°C) .....1026mW

Storage Temperature.........................................-65°C to +150°C

Maximum Junction Temperature .....................................+150°C

Operating Temperature Range...........................-40°C to +85°C

Lead Temperature (soldering, 10s) .................................+300°C

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

P W R D N

Input High Voltage VIH 2.0 V

Input Low Voltage VIL 0.8 V

Input Current IIN VIN = VCC and 0V -15 15 µA

LVDS INPUT

Differential Input High Threshold VTH 7 100 mV

Differential Input Low Threshold VTL -100 -7 mV

PWRDN = high or low; VRIN+ = 2.4V,

RIN- = open or RIN+ = open, VRIN- = 2.4V -6 +1

Single-Ended Input Current IIN PWRDN = high or low; VRIN+ = 0V,

RIN- = open or RIN+ = open, VRIN- = 0V -18 +1

µA

Power-Off Single-Ended Input

Current IIN

(

OFF

)

VCC = 0V; VRIN+ = 2.4V, RIN- = open

or RIN+ = open, VRIN- = 2.4V -1 +12 µA

Differential Input Resistance RIDIFF VCC = +3.6V or 0V, PWRDN = high or low 5 kΩ

LVDS DRIVER

Differential Output Voltage VOD Figure 1 250 320 450 mV

Change in VOD Between

Complementary Output States ΔVOD Figure 1 25 mV

Offset (Common-Mode) Voltage VOS Figure 1 0.90 1.25 1.375 V

Change in VOS Between

Complementary Output States ΔVOS Figure 1 25 mV

Output High Voltage VOH Figure 1 1.6 V

Output Low Voltage VOL Figure 1 0.7 V

Differential Output Resistance

(Note 2) RODIFF VCC = +3.6V or 0V, PWRDN = high or low 150 240 330 Ω

Differential High Output Voltage

in Fail-Safe VOD+ RIN+, RIN- undriven with short, open, or

100Ω termination 250 450 mV

VID = +100mV, VDO_+ = GND

Output Short-Circuit Current ISC VID = -100mV, VDO_- = GND -15 mA

MAX9150

Low-Jitter, 10-Port LVDS Repeater

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3.0V to +3.6V, RL= 50Ω±1%, |VID|= 0.1V to 1.0V, VCM = |VID / 2|to 2.4V - |VID / 2|, PWRDN = high, TA= -40°C to +85°C,

unless otherwise noted. Typical values are at VCC = +3.3V, TA= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

VCC = 0V, PWRDN = GND;

VDO_+ = 3.6V or 0V, DO_- = open; or

VDO_- = 3.6V or 0V, DO_+ = open

-1 +1 µA

Single-Ended Output High-

Impedance Current IOZ PWRDN = GND;

VDO_+ = 3.6V or 0V, DO_- = open; or

VDO_- = 3.6V or 0V, DO_+ = open

-1 +1 µA

SUPPLY CURRENT

DC 100 140

Supply Current (Note 2) ICC 200MHz (400Mbps) Figure 2 130 160 mA

Power-Down Supply Current ICCZ PWRDN = GND 60 µA

AC ELECTRICAL CHARACTERISTICS

(VCC = +3.0V to +3.6V, RL= 50Ω±1%, CL= 5pF, |VID|= 0.2V to 1.0V, VCM = |VID / 2|to 2.4V - |VID / 2|, PWRDN = high, TA= -40°C

to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA= +25°C.) (Notes 2–5)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Differential Propagation Delay

High-to-Low tPHLD Figures 2, 3 1.6 2.2 3.5 ns

Differential Propagation Delay

Low-to-High tPLHD Figures 2, 3 1.6 2.2 3.5 ns

Total Peak-to-Peak Jitter

(Random and Deterministic)

(Note 6) tJPP Figures 2, 3 20 120 ps

Differential Output-to-Output

Skew (Note 7) tSKOO Figures 2, 3 40 100 ps

Differential Part-to-Part Skew

(Note 8) tSKPP Figures 2, 3 1.9 ns

Rise/Fall Time TTLH

tTHL Figures 2, 3 150 220 450 ps

M axi m um Inp ut Fr eq uency ( N ote 9) fMAX Figures 2, 3 400 Mbps

MAX9150

Low-Jitter, 10-Port LVDS Repeater

4 _______________________________________________________________________________________

Typical Operating Characteristics

(Figure 2, VCC = +3.3V, RL= 50Ω, CL= 5pF, IVIDI = 200mV, VCM = 1.2V, fIN = 50MHz, TA = +25°C, unless otherwise noted.)

SUPPLY CURRENT (mA)

150

0.1 1 100 1000

SUPPLY CURRENT vs. FREQUENCY

100

120

110

130

140

MAX9150 toc01

INPUT FREQUENCY (MHz)

2.10

2.20

2.15

2.30

2.25

2.35

2.40

3.0 3.2 3.33.1 3.4 3.5 3.6

DIFFERENTIAL PROPAGATION DELAY

vs. SUPPLY VOLTAGE

MAX9150 toc02

VCC (V)

DIFFERENTIAL PROPAGATION DELAY (ns)

tPHLD

tPLHD

50 7060 80 90 100

MAX9150 toc03

RL (Ω)

2.10

2.20

2.15

2.30

2.25

2.35

2.40

DIFFERENTIAL PROPAGATION DELAY

vs. OUTPUT LOAD

DIFFERENTIAL PROPAGATION DELAY (ns)

tPLHD

tPHLD

Note 1: Current-into-device pins is defined as positive. Current-out-of-device pins is defined as negative. All voltages are

referenced to ground, except VTH, VTL, VOD, and ΔVOD.

Note 2: Guaranteed by design, not production tested.

Note 3: AC parameters are guaranteed by design and characterization.

Note 4: CLincludes scope probe and test jig capacitance.

Note 5: Signal generator conditions, unless otherwise noted: frequency = 200MHz, 50% duty cycle, RO= 50Ω, tR= 1ns, and tF=

1ns (0% to 100%).

Note 6: Signal generator conditions for tJPP: VOD = 200mV, VOS = 1.2V, frequency = 200MHz, 50% duty cycle, RO= 50Ω, tR= 1ns,

and tF= 1ns (0% to 100%. tJPP includes pulse (duty cycle) skew.

Note 7: tSKOO is the magnitude difference in differential propagation delay between outputs for a same-edge transition.

Note 8: tSKPP is the |MAX - MIN|differential propagation delay.

Note 9: Device meets VOD and AC specifications while operating at fMAX.

AC ELECTRICAL CHARACTERISTICS (continued)

(VCC = +3.0V to +3.6V, RL= 50Ω±1%, CL= 5pF, |VID|= 0.2V to 1.0V, VCM = |VID / 2|to 2.4V - |VID / 2|, PWRDN = high, TA= -40°C

to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA= +25°C.) (Notes 2–5)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Power-Down Time tPD 100 ns

Power-Up Time tPU

Figures 4, 5 100 µs

MAX9150

Low-Jitter, 10-Port LVDS Repeater

_______________________________________________________________________________________

-20

-10

20 B

F, I

A, E

3.0 3.23.1 3.3 3.4 3.5 3.6

DIFFERENTIAL OUTPUT-TO-OUTPUT

SKEW vs. SUPPLY VOLTAGE

MAX9150 toc05

VCC (V)

DIFFERENTIAL OUTPUT-TO-OUTPUT SKEW (ps)

A = D02 - D01 B = D03 - D01 C = D04 - D01

D = D05 - D01 E = D06 - D01 F = D07 - D01

G = D08 - D01 H = D09 - D01 I = D010 - D01 185

195

190

205

200

210

215

3.0 3.2 3.33.1 3.4 3.5 3.6

TRANSITION TIME vs. SUPPLY VOLTAGE

MAX9150 toc06

VCC (V)

TRANSITION TIME (ps)

tTHL

tTLH

100

200

400

300

500

600

597111315

TRANSITION TIME vs. CAPACITANCE

MAX9150 toc08

CL (pF)

TRANSITION TIME (ps)

tTHL

tTLH

2.10

2.15

2.20

2.25

2.30

2.35

2.40

2.45

2.50

0 0.5 1.0 1.5 2.0 2.5

MAX9150 toc04

VCM (V)

DIFFERENTIAL PROPAGATION DELAY

vs. COMMON-MODE VOLTAGE

DIFFERENTIAL PROPAGATION DELAY (ns)

tPLHD

tPHLD

180

200

190

220

210

230

240

50 7060 80 90 100

TRANSITION TIME vs. OUTPUT LOAD

MAX9150 toc07

RL (Ω)

TRANSITION TIME (ps)

tTHL

tTLH

Typical Operating Characteristics (continued)

(Figure 2, VCC = +3.3V, RL= 50Ω, CL= 5pF, IVIDI = 200 mV, VCM = 1.2V, fIN = 50MHz, TA = +25°C, unless otherwise noted.)

50 7060 80 90 100

DIFFERENTIAL OUTPUT vs. OUTPUT LOAD

RL (Ω)

270

370

320

470

420

520

570

MAX9150 toc10

DIFFERENTIAL OUTPUT (mV)

310

315

325

320

330

335

3.0 3.23.1 3.3 3.4 3.5 3.6

DIFFERENTIAL OUTPUT vs. SUPPLY VOLTAGE

MAX9150 toc09

VCC (V)

DIFFERENTIAL OUTPUT (mV)

Detailed Description

The LVDS interface standard is a signaling method

intended for point-to-point communication over a con-

trolled impedance medium, as defined by the

ANSI/TIA/EIA-644 and IEEE 1596.3 standards. The

LVDS standard uses a lower voltage swing than other

common communication standards, achieving higher

data rates with reduced power consumption while

reducing EMI emissions and system susceptibility to

noise.

The MAX9150 is a 400Mbps, 10-port LVDS repeater

intended for high-speed, point-to-point, low-power

applications. This device accepts an LVDS input and

repeats it on 10 LVDS outputs. The device is capable of

detecting differential signals as low as 100mV and as

high as 1V within a 0 to 2.4V input voltage range. The

LVDS standard specifies an input voltage range of 0 to

2.4V referenced to ground.

The MAX9150 outputs use a current-steering configura-

tion to generate a 5mA to 9mA output current. This cur-

rent-steering approach induces less ground bounce

and no shoot-through current, enhancing noise margin

and system speed performance. The driver outputs are

short-circuit current limited, and are high impedance

(to ground) when PWRDN = low or the device is not

powered. The outputs have a typical differential resis-

tance of 240Ω.

The MAX9150 current-steering architecture requires a

resistive load to terminate the signal and complete the

transmission loop. Because the device switches the

direction of current flow and not voltage levels, the out-

put voltage swing is determined by the total value of

the termination resistors multiplied by the output cur-

rent. With a typical 6.4mA output current, the MAX9150

produces a 320mV output voltage when driving a trans-

mission line terminated at each end with a 100Ωtermi-

nation resistor (6.4mA x 50Ω= 320mV). Logic states

are determined by the direction of current flow through

the termination resistors.

Fail-Safe

Fail-safe is a receiver feature that puts the output in a

known logic state (high) under certain fault conditions.

The MAX9150 outputs are differential high when the

inputs are undriven and open, terminated, or shorted

(Table 1).

MAX9150

Low-Jitter, 10-Port LVDS Repeater

6 _______________________________________________________________________________________

Table 1. Input/Output Function Table

INPUT, VID OUTPUTS, VOD

+100mV High

-100mV Low

Open High

Short High

Terminated Undriven High

Note: VID = RIN+ - RIN-, VOD = DO_+ - DO_-

High = 450mV > VOD > 250mV

Low = -250mV > VOD > -450mV

PIN NAME FUNCTION

1, 3, 11, 13,

16, 18, 20,

24, 26, 28

DO2+, DO1+, DO10+,

DO9+, DO8+, DO7+,

DO6+, DO5+, DO4+, DO3+

2, 4, 12, 14,

15, 17, 19,

23, 25, 27

DO2-, DO1-, DO10-, DO9-,

DO8-, DO7-,

DO6-, DO5-, DO4-, DO3-

Differential LVDS Outputs. Connect a 100Ω resistor across each of the output

pairs (DO_+ and DO_-) adjacent to the IC, and connect a 100Ω resistor at the

input of the receiving circuit.

5PWRDN Power Down. Drive PWRDN low to disable all outputs and reduce supply current

to 60µA. Drive PWRDN high for normal operation.

6, 9, 21 GND Ground

10, 22 VCC Power. Bypass each VCC pin to GND with 0.1µF and 1nF ceramic capacitors.

7 RIN+

8 RIN-

LVDS Receiver Inputs. RIN+ and RIN- are high-impedance inputs. Connect a

resistor from RIN+ to RIN- to terminate the input signal.

Pin Description

MAX9150

Low-Jitter, 10-Port LVDS Repeater

_______________________________________________________________________________________ 7

Applications Information

Supply Bypassing

Bypass each of the VCC pins with high-frequency sur-

face-mount ceramic 0.1µF and 1nF capacitors in paral-

lel as close to the device as possible, with the smaller

valued capacitor closest to the VCC pins.

Differential Traces

Output trace characteristics affect the performance of

the MAX9150. Use controlled impedance traces to

match trace impedance to both the transmission medi-

um impedance and termination resistor. Ensure that

noise couples as common mode by running the differ-

ential traces close together. Reduce skew by matching

the electrical length of the traces. Excessive skew can

result in a degradation of magnetic field cancellation.

Maintain the distance between the differential traces to

avoid discontinuities in differential impedance. Avoid

90° turns and minimize the number of vias to further

prevent impedance discontinuities.

Cables and Connectors

Transmission media should have a controlled differen-

tial impedance of 100Ω. Use cables and connectors

that have matched differential impedance to minimize

impedance discontinuities.

Avoid the use of unbalanced cables, such as ribbon or

simple coaxial cable. Balanced cables, such as twisted

pair, offer superior signal quality and tend to generate

less EMI due to canceling effects. Balanced cables

tend to pick up noise as common mode, which is

rejected by the LVDS receiver.

Termination

Termination resistors should match the differential char-

acteristic impedance of the transmission line. Since the

MAX9150 has current-steering devices, an output volt-

age will not be generated without a termination resistor.

Output voltage levels are dependent upon the value of

the total termination resistance. The MAX9150 pro-

duces LVDS output levels for point-to-point links that

are double terminated (100Ωat each end). With the

typical 6.4mA output current, the MAX9150 produces

an output voltage of 320mV when driving a transmis-

sion line terminated at each end with a 100Ωtermina-

tion resistor (6.4mA x 50Ω= 320mV). Termination

resistance values may range between 90Ωand 150Ω,

depending on the characteristic impedance of the

transmission medium.

Minimize the distance between the output termination

resistor and the corresponding MAX9150 transmitter

output. Use ±1% surface-mount resistors.

Minimize the distance between the input termination

resistor and the MAX9150 receiver input. Use a ±1%

surface-mount resistor.

Chip Information

PROCESS : CMOS

Figure 1. Driver-Load Test Circuit

RIN+

RIN-

GENERATOR

50Ω

MAX9150

DO1+

DO10+

DO10-

DO1-

VOD VOS

25Ω

VOS

VOD

Test Circuits and Timing Diagrams

MAX9150

Low-Jitter, 10-Port LVDS Repeater

8 _______________________________________________________________________________________

Test Circuits and Timing Diagrams (continued)

Figure 3. Propagation Delay and Transition Time Waveforms

RIN-

RIN+

tPHLD

VCM

VDIFF = (VDO_+) - (VDO_-)

tTHL

20%

80%

50% O O 50%

tTLH

20%

DIFFERENTIAL

tPLHD

VID

VCM

Figure 2. Repeater Propagation Delay and Transition Time Test Circuit

DO1+

DO10+

50Ω

DO10-

DO1-

RIN+

RIN-

GENERATOR

50Ω

5pF

MAX9150

Low-Jitter, 10-Port LVDS Repeater

_______________________________________________________________________________________ 9

Figure 4. Power-Up/Down Delay Test Circuit

RIN+

1.1V

1.0V

1.1V

1.0V

RIN-

PWRDN

GENERATOR

50Ω

DO1+

DO10+

DO10-

DO1-

1.2V

25Ω

5pF

MAX9150

Figure 5. Power-Up/Down Delay Waveform

1.2V

VDO_+ WHEN VID = +100mV

VDO_- WHEN VID = -100mV

VDO_+ WHEN VID = -100mV

VDO_- WHEN VID = +100mV

3.0V

VOH

VOL

tPU

1.5V

50%

tPD

1.5V

PWRDN

Test Circuits and Timing Diagrams (continued)

PACKAGE TYPE PACKAGE CODE DOCUMENT NO.

28 TSSOP U28-4 21-0066

Package Information

For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the

package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the

package regardless of RoHS status.

MAX9150

Low-Jitter, 10-Port LVDS Repeater

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

Revision History

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 10/00 Initial release —

1 3/09 Replaced the obsolete Rev C package outline drawing with the Package Information

table 9