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Sanyo Electric Components Datasheet

LA7795T Datasheet

AGC Amplifier

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LA7795T pdf
Ordering number : ENN8268
LA7795T Monolithic Linear IC
AGC Amplifier with Step Gain Control
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The LA7795T bipolar monolithic IC is an AGC amplifier with driver amplifier for analog-to-digital converters. It is ideally
suited for use with receiver systems that receive QPSK and/or QAM data transmissions.
Functions
IF AGC control
IF AGC amplifier
IF step gain controlled amplifier
Driver amplifier
Applications
Digital CATV
Cable modem receivers
IP Telephony receivers
Specitications
Absolute Maximum Ratings at Ta = 25 °C
Parameter
Symbol
Conditions
Maximum Supply Voltage
Circuit Voltages
VCC max
V max
Pin 1
Pin 4, Pin 5
Circuit Current
Allowable Power Dissipation
I6
I7
Pd max
Pin 6 sink current
Pin 7 sink current
Ta 85°C
Operating Temperature
Topr
Storage Temperature
Tstg
*Mounted on PCB (paper phenol 20.0 × 10.0 × 0.8 t mm)
Recommended Operating Conditions at Ta = 25 °C
Parameter
Recommended Supply Voltage
Operating Supply Voltage Range
Symbol
VCC
VCC op
Pin 1
Pin 1
Conditions
Ratings
7.0
VCC op
2
2
190*
-20 to +85
-55 to +150
Unit
V
V
mA
mW
°C
°C
Ratings
5.0
4.5 to 5. 5
Unit
V
V
33005 TN PC No.8268-1/8


Sanyo Electric Components Datasheet

LA7795T Datasheet

AGC Amplifier

No Preview Available !

LA7795T pdf
LA7795T
Electrical Characteristics
AC Characteristics at Ta = 25 °C, VCC = 5.0 V
Parameter
Symbol
Pin
No.
Conditions
Circuit Current
Itotal
1 No Signal
IF Input Frequency Range f(in)
2, 3 fc : -3 dB
Noise Figure
Intermodulation
Total Amplifier Gain
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AGC Range 1
IF Output Level
AGC Control Max. Voltage
NF
IM3
G(AGC1)
G(AGC2)
G(AGC3)
GR1
VO(IF)
V4H
6, 7
6/2, 3
7/2, 3
6/2, 3
7/2, 3
6/2, 3
7/2, 3
6, 7
4
V4 = 3.0 V, f = 45 MHz
V4 = 3.0 V, f = 45 MHz
Pin 5 : VCC
Pin 5 : GND
V4 = 3.0 V, f = 45 MHz
Pin 5 : OPEN
f1 = 44 MHz, f2 = 45 MHz
Input = 90 dBµ/Tone, Output = 104 dBµ/Tone
V4 = 3.0 V, f = 45 MHz
Pin 5 : VCC
V4 = 3.0 V, f = 45 MHz
Pin 5 : GND
V4 = 3.0 V, f = 45 MHz
Pin 5 : OPEN
IF Output Level < ±1 dB, f = 45 MHz
Output Level, f = 45 MHz
Gain Max.
AGC Control Min. Voltage V4L
4 Gain Min.
Input impedance
Zin 2, 3 V4 = 0 V, f = 45 MHz
Note) *1 : Measurement circuit 1, *2 : Measurement circuit 2, *3 : Measurement circuit 3
*1
*1
*2
*2
*2
*1
*1
*1
*1
*1
*1
*1
*1
*3
min
18
30
-
-
-
50
Ratings
typ
24
-
5
5
8
-
max
30
100
-
-
-
-
Unit
mA
MHz
dB
dB
dB
dBc
57.5
47.5
33.5
40
60 62.5
50 52.5
36 38.5
--
dB
dB
dB
dB
- 1.0
2.5 -
0-
- 1 // 4.9
- Vp-p
3.3 V
0.5 V
- k// pF
Package Dimensions
unit : mm
3245A [LA7795T]
Block Diagram
VCC
IF Input1
IF Input2
1
2
3
AGC Control
4
AGC
8 Gnd
7 Driver Output1
6 Driver Output2
5 Gain Control Switch
No.8268-2/8


Part Number LA7795T
Description AGC Amplifier
Maker Sanyo Semiconductor
Total Page 8 Pages
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LA7795T pdf
LA7795T Datasheet PDF
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