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TDA8785 Datasheet, PDF (4/24 Pages) NXP Semiconductors – 8-bit high-speed analog-to-digital converter with gain and offset controls
Philips Semiconductors
8-bit high-speed analog-to-digital converter
with gain and offset controls
Product specification
TDA8785
PINNING
SYMBOL
VCCA1
VCCA2
AGND1
AGND2
DEC2
B
VRB
VDACO(n)
VDACO(p)
VFSDAC(p)
VFSDAC(n)
DA7
DA6
DA5
DA4
DA3
DA2
DA1
DA0
CLKDAC
DGND
CLKADC
VCCD
PIN
DESCRIPTION
1 analog supply voltage 1 (+5 V)
2 analog supply voltage 2 (+5 V)
3 analog ground 1
4 analog ground 2
5 decoupling input 2
6 bandwidth adjustment node input
7 ADC reference voltage output
bottom (decoupling)
8 DAC negative voltage output
9 DAC positive voltage output
10 DAC full-scale positive control
voltage input
11 DAC full-scale negative control
voltage input
12 DAC TTL input; bit 7 (MSB)
13 DAC TTL input; bit 6
14 DAC TTL input; bit 5
15 DAC TTL input; bit 4
16 DAC TTL input; bit 3
17 DAC TTL input; bit 2
18 DAC TTL input; bit 1
19 DAC TTL input; bit 0 (LSB)
20 DAC clock input
21 digital ground
22 ADC clock input
23 digital supply voltage (+5 V)
SYMBOL
OGND
VCCO
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
OF
DEC1
Vref
VSOFF(p)
VSOFF(n)
VFSAD(p)
VFSAD(n)
VFOFF(n)
VFOFF(p)
Vi(p)
Vi(n)
PIN
DESCRIPTION
24 output ground
25 output supply voltage (+5 V)
26 output data; bit 0 (LSB)
27 output data; bit 1
28 output data; bit 2
29 output data; bit 3
30 output data; bit 4
31 output data; bit 5
32 output data; bit 6
33 output data; bit 7 (MSB)
34 output format input
35 decoupling input 1
36 reference voltage output (2.75 V)
37 slow offset amplifier positive
voltage input
38 slow offset amplifier negative
voltage input
39 gain control positive voltage input
40 gain control negative voltage input
41 fast offset amplifier negative
voltage input
42 fast offset amplifier positive voltage
input
43 analog positive voltage input
44 analog negative voltage input
1997 Dec 18
4