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Caution: Observe precautions when handling because these devices are sensitive to electrostatic discharge
GaAs MULTI-CHIP MODULE
MC-7831
870 MHz CATV 18 dB PUSH-PULL AMPLIFIER
DATA SHEET
Document No. PG10090EJ04V0DS (4th edition)
Date Published December 2006 NS CP(N)
DESCRIPTION
The MC-7831 is a GaAs Multi-chip Module designed for use in CATV applications up to 870 MHz. This unit has
low distortion, low noise figure and return loss across the entire frequency band.
Reliability and performance uniformity are assured by our stringent quality and control procedures.
FEATURES
• Low distortion
• High linear gain GL = 18.0 dB MIN. @f = 870 MHz
• Low return loss
ORDERING INFORMATION
Part Number
Order Number
Package
Supplying Form
MC-7831
MC-7831-AZ
7-pin special with heatsink
(Pb-Free)
25 pcs MAX./Tray
Remark To order evaluation samples, contact your nearby sales office.
Part number for sample order: MC-7831-AZ
ABSOLUTE MAXIMUM RATINGS (TA = +25C)
Parameter
Ratings
Unit
Supply Voltage
30
V
Input Voltage Note
65.0
dBmV
Operating Case Temperature
30 to +100
C
Storage Temperature
40 to +100
C
Note In case of single tone
<R>
Data Sheet PG10090EJ04V0DS
2
MC-7831
RECOMMENDED OPERATING CONDITIONS (ZS = ZL = 75 )
Parameter
Test Conditions
TYP.
Unit
Supply Voltage
24.0
V
Input Voltage
110 channel, Flat
21.0
dBmV
Operating Case Temperature
25
C
ELECTRICAL CHARACTERISTICS (TC = 30 5C, VDD = 24 V, ZS = ZL = 75 )
Parameter
Test Conditions
TYP.
Unit
Linear Gain
f = 870 MHz

dB
Gain Slope
f = 40 to 870 MHz
dB
Gain Flatness
f = 40 to 870 MHz, Peak to valley
dB
Noise Figure 1
f = 50 MHz
dB
Noise Figure 2
f = 870 MHz
dB
Operating Current
Pin = None
mA
Composite Triple Beat
110 channel,
VO = 44 dBmV, Flat
dBc
Cross Modulation
dBc
Composite 2nd Order Beat
dBc
Input / Output Return Loss 1
f = 40 to 160 MHz
dB
Input / Output Return Loss 2
f = 160 to 320 MHz
dB
Input / Output Return Loss 3
f = 320 to 640 MHz
dB
Input / Output Return Loss 4
f = 640 to 870 MHz
dB
Data Sheet PG10090EJ04V0DS
3
MC-7831
PACKAGE DIMENSIONS
7-PIN SPECIAL WITH HEATSINK (UNIT: mm)
PIN CONNECTION
Data Sheet PG10090EJ04V0DS
4
MC-7831
NOTES ON CORRECT USE
(1) The space between PC board and root of the lead should be kept more than 1 mm to prevent undesired
stress to the lead and also should be kept less than 4 mm to prevent undesired parasitic inductance.
Recommended that space is 2.0 to 3.0 mm typical.
(2) Recommended torque strength of the screw is 59 to 78 Ncm.
(3) Form the ground pattern as wide as possible to minimize ground impedance.
(to prevent undesired oscillation)
All the ground pins must be connected together with wide ground pattern to decrease impedance difference.
RECOMMENDED SOLDERING CONDITIONS
This product should be soldered and mounted under the following recommended conditions. For soldering
methods and conditions other than those recommended below, contact your nearby sales office.
Soldering Method
Soldering Conditions
Recommended Condition Symbol
Partial Heating
Peak temperature (pin temperature) : 350C or below Note
Soldering time (per pin of device) : 3 seconds or less
Note The point of pin part heating must be kept more than 1.2 mm distance from the root of lead.
Data Sheet PG10090EJ04V0DS 5
MC-7831
Caution GaAs Products
This product uses gallium arsenide (GaAs).
GaAs vapor and powder are hazardous to human health if inhaled or ingested, so please observe the
following points.
• Follow related laws and ordinances when disposing of the product. If there are no applicable laws
and/or ordinances, dispose of the product as recommended below.
1. Commission a disposal company able to (with a license to) collect, transport and dispose of
materials that contain arsenic and other such industrial waste materials.
2. Exclude the product from general industrial waste and household garbage, and ensure that the
product is controlled (as industrial waste subject to special control) up until final disposal.
• Do not burn, destroy, cut, crush, or chemically dissolve the product.
• Do not lick the product or in any way allow it to enter the mouth.