2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 1
75 Ohm RF Amplifier TAT 7468B
50-1000 MHz Preliminary Data Sheet
Overview
The TAT7468B is a 75 Ohm RF Amplifier designed for use to 1 GHz. The TAT7468B contains two
separate amplifiers for push pull applications. It is fabricated using 6-inch GaAs pHEMT technology to
optimize performance and cost. Each amplifier contains on-chip active biasing. The bias current set
point of each amplifier is adjustable with a single resistor from the input to ground.
Features
• 75 Ohm, 50-1000 MHz Bandwidth
• Low Noise Figure: 3.7 dB to 1000 MHz
• Adjustable Low Power Consumption
• SOIC-8 or QFN package
Applications
• Replacement for 5v SOIC-8 amplifiers
• Edge QAM input gain stage
• VONU Transimpedance Amplifiers
• Distribution amplifiers
SOIC8 Pin Configuration
Pin No.
Pin Name
Description
1 RF IN A RF Input
2,3 GND Ground
4 RF IN B RF Input
5 RF OUT B RF Output
6 BIAS ADJ B Bias Adjustment
7 BIAS ADJ A Bias Adjustment
8 RF OUT A RF Output
Exposed Slug GND Ground
Target Specifications: TAT7468B RF Amplifier
Table 1. RF Characteristics
Characteristic Notes Min Typ Max Unit
Bandwidth 50 1002 MHz
RF Gain 16 dB
Gain Flatness 0.75 +/- dB
Noise Figure 3.7 dB
Input Return Loss To 1000 MHz
-18 dB
Output Return Loss To 1000 MHz
-15 dB
Output IP3 (2 dBm/tone) 6 MHz spacing
35 dBm
Output IP2 (2 dBm/tone, <600MHz) 6 MHz spacing
68 dBm
Idd
150
mA
1
2
3
4
8
7
6
5
2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 2
Ordering Information
Part Number
Description
Package
Description
Component
Packaging
TAT7468B-SC8 RFIC, 50 -1000MHz , push pull
amplifier
RoHS Compliant
SOIC-8
Engineering
Samples
TAT7468B-Q
RFIC, 50-1000MHz, push pull
amplifier sample
RoHS Compliant
QFN 4x4mm
Engineering
Samples
TAT7468B-SC8-EB
Evaluation Board Evaluation Board
SOIC-8
TAT7468B-Q-EB Evaluation Board Evaluation Board
QFN
Absolute Maximum Ratings
Parameter
Absolute Maximum
RF Input Power TBD
Voltage 10.0 volts
Operating Temperature -40
o
C to +85
o
C
Storage Temperature -60
o
C to +150
o
C
ESD Classification and Moisture Sensitivity Level*
Parameter
Targets
ESD Classification
- Human Body Model Class 1B, 500V
- Machine Model Class IV, 2000V
Moisture Sensitivity Level Level 3
RoHS RoHS compliant per EU directive
*Expected Behavior
2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 3
1
2
1
2
3
4
1
2
1
2
3
4
OUT B
OUT A
BIAS
ADJ A
IN A
IN B
BIAS
ADJ B
1
2
3
4
5
67 8 9 10
11
12
13
14
15
1617181 920
1
1
L1
4x4mm QFN
TAT 7468QE
RF
INPUT
+5v, 150mA
RF
C3
OUTPUT
VDD
VDD
PADDLE
BACKSIDE
L4 L7
BIAS BIAS ADJUST
BIAS
L6
L2
L5
L3
C1
C2
C5
C6
C7
C13
C12
R2
R1
C8
T1
J2
T2
ADJUST
BIAS
ADJUST
R3
R4
R5
R6
C4
C9 C10
C11
TAT7468 QFN APPLICATION SCHEMATIC (50 - 1000 MHz)
note : set BIAS ADJUST to 0v for low bias (typ 130mA) R6=0 ohm
CONTROL
J2
Reference
Designator Value MFG MFG PN
L1,2 560 nH CoilCraft 0402AF-561XJLW
L3 910 nH CoilCraft 1008AF-901XKLC
L4,5 4.7nH CoilCraft 0402CS-4N7XJLW
L6,7 5.6 nH CoilCraft 0402CS-5N6XJLW
T1,2 1:1 Balun MiniCircuits TC1-33-75G2+
C1,2,9,10,11 .01 uF AVX 0402YC103KAT
C5,6,7,8 0.5 pF AVX 04025A005BAT9A
C12,13 220 pF AVX 04025C221KAT2A
R1,2 750 ohm Dale CRCW0402750RFKED
R3,4 0 ohm Dale CRCW04020R0FKED
R5 750 ohm Dale CRCW0402750RFKED
R6 0 ohm Dale CRCW04020R0FKED
J1,2 F-Edge Mount Amphenol 531-40039
U1 TriAccess TAT 7468B
TAT 7468B Return Loss
-40
-35
-30
-25
-20
-15
-10
-5
0
0 200 400 600 800 1000 1200
Freq (MHz)
S11 & S22 (dB)
S22
S11
TAT 7468B Gain and Noise Figure
13
14
15
16
17
18
19
20
21
0 200 400 600 800 1000 1200
Freq (MHz)
Gain (dB)
0
1
2
3
4
5
6
7
8
Noise Figure (dB)
Gain
NF
Performance Data (5V 150mA, push-pull amplifier, QFN 4x4mm)
50
55
60
65
70
75
30
33
36
39
42
45
0 100 200 300 400 500 600 700 800 900 1000 1100
OIP2 (dBm)
OIP3 (dBm)
Freq (MHz)
TAT7468 Output IP2 and IP3 versus Freq
6 MHz separation, +2 dBm/tone
IP3L
IP3H
IP2L
IP2H
IP2 --->
<--
IP3
Note: Data for IP2H fundamental > 500 MHz falls
out of band (> 1000 MHz).
2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 4
Package Pin Outs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
16 19
18 20
21
QFN 4x4mm
BOTTOM VIEW
SOIC8
TOP VIEW
1
2
3
4
8
7
6
5
9
PIN NUMBER SOIC8 QFN 4X4mm
1 INPUT A INPUT A
2 NC INPUT A
3 NC NC
4 INPUT B INPUT B
5 OUTPUT B INPUT B
6 BIAS ADJ A NC
7 BIAS ADJ B BIAS ADJ B
8 OUTPUT A NC
9 PADDLE GROUND NC
10 NC
11 OUTPUT B
12 OUTPUT B
13 NC
14 OUTPUT A
15 OUTPUT A
16 NC
17 NC
18 NC
19 BIAS ADJ A
20 NC
21
PADDLE GROUND
2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 5
Mechanical Dimensions (SOIC8, TAT7468B-SC8)
Symbol Min Nominal
Max
A 0.054
0.059
0.068
A1 0
0.004
A2 0.057
B 0.013
0.02
C 0.007
0.01
D 0.189
0.197
E1 0.15
0.153
0.157
E1 0.05
E1 0.228
0.236
0.244
L 0.016
0.05
y 0.004
theta 0
8
L1 0.037
0.041
0.045
Dimensions in inches
2255 Challenger Way, Santa Rosa, CA 95407 Proprietary and Confidential
707-526-4498 www.triaccesstech.com Specifications subject to change, R90313
Page 6
Mechanical Specifications (QFN 4x4mm, TAT7468B-QFN),
Dimensions in mm
TriAccess Technologies uses two variations of Pin #1 identification: Variation A and B. Variation A uses a metal square,
Variation B uses the notched pad corner. Both variations may be used at any time. Layouts need to plan for both
contingencies.