TDA8780M Datasheet, PDF (3/16 Pages) NXP Semiconductors – True logarithmic amplifier

Philips Semiconductors
True logarithmic amplifier
BLOCK DIAGRAM
Product specification
TDA8780M
dbook, full pagewidth
C _lf
Vin
Vin
C _lf
CE
C _DEC1
C _DEC2
6
100 k Ω
1
20
100 k Ω
15 ^{100 k Ω}
100 k Ω
16
3
CONTROL
18
4
5
VP
11
20 kΩ
20 kΩ
20 kΩ
13
8
20 kΩ
17
TDA8780M
2 7 10 14 19
GND1 GND2 GND3 GND4 GND5
Rg
Rg
Vout
Vref
TEST
MBE161
Fig.1 Block diagram.
1995 Jul 25
3