tda8786g NXP Semiconductors, tda8786g Datasheet - Page 2

• Manufacturer Part Number: tda8786g
• Description: 10-bit Analog-to-digital Interface For Ccd Cameras
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FEATURES
QUICK REFERENCE DATA
ORDERING INFORMATION
1997 Nov 17
V
V
V
I
I
I
ADC
V
G
f
AGC
N
P
TDA8786G
TDA8786AG
CCA
CCD
CCO
CLK(max)
Correlated Double Sampling (CDS), AGC, soft clipper,
pre-blanking, 10-bit ADC and reference regulator
included
Fully programmable via a 3-wire serial interface
Sampling frequency up to 18 MHz
AGC gain from 3.5 to 33.5 dB (in 0.1 dB steps)
Programmable soft clipper for white compression
(starting at 40% of the input signal)
Standby mode available for each block for power saving
applications (19 mW)
6 dB fixed gain analog output for analog iris control
8-bit and 10-bit DAC included for analog settings
Low power consumption of only 475 mW (typ.)
5 V operation and 2.5 to 5 V operation for the digital
outputs
CDS control pulse: TDA8786 = HIGH;
TDA8786A = LOW
TTL compatible inputs, TTL and CMOS compatible
outputs.
CCA
CCD
CCO
i(CDS)(p-p)
tot
tot(rms)
10-bit analog-to-digital interface for
CCD cameras
CDS
NUMBER
SYMBOL
TYPE
res
dyn
analog supply voltage
digital supply voltage
digital outputs supply voltage
analog supply current
digital supply current
digital outputs supply current
ADC resolution
CDS input voltage (peak-to-peak value)
CDS output amplifier gain
maximum clock frequency
AGC dynamic range
total noise from CDS input to ADC
output (RMS value)
total power consumption
LQFP48
NAME
PARAMETER
plastic low profile quad flat package; 48 leads; body 7
f
C
gain = 3.5 dB
DESCRIPTION
2
CLK
L
GENERAL DESCRIPTION
The TDA8786; TDA8786A is a 10-bit analog-to-digital
interface for CCD cameras. The device includes a
correlated double sampling circuit, AGC, a soft clipper
circuit and a low power 10-bit Analog-to-Digital Converter
(ADC) together with its reference voltage regulator.
The AGC and soft clipper circuits are controlled by on-chip
DACs via a serial interface.
A 10-bit DAC controls the ADC input clamp level.
A pre-blanking function is also included.
An additional DAC is provided for additional system
controls; its output voltage range is 1.4 V (p-p) which is
available at pin OFDOUT.
APPLICATIONS
PACKAGE
= 20 pF; ramp input
= 18 MHz;
CCD camera systems.
CONDITIONS
TDA8786; TDA8786A
4.5
4.5
2.5
18
MIN.
7
1.4 mm
4.75
4.75
2.6
83
16
1
10
400
6
30
0.5
475
TYP.
Product specification
5.5
5.5
5.5
1200
MAX.
SOT313-2
VERSION
V
V
V
mA
mA
mA
bits
mV
dB
MHz
dB
LSB
mW
UNIT