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TDA8786 Dataheets PDF



Part Number TDA8786
Manufacturers NXP
Logo NXP
Description 10-bit analog-to-digital interface for CCD cameras
Datasheet TDA8786 DatasheetTDA8786 Datasheet (PDF)

INTEGRATED CIRCUITS DATA SHEET TDA8786; TDA8786A 10-bit analog-to-digital interface for CCD cameras Product specification Supersedes data of 1997 May 20 File under Integrated Circuits, IC02 1997 Nov 17 Philips Semiconductors Product specification 10-bit analog-to-digital interface for CCD cameras FEATURES • 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.

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INTEGRATED CIRCUITS DATA SHEET TDA8786; TDA8786A 10-bit analog-to-digital interface for CCD cameras Product specification Supersedes data of 1997 May 20 File under Integrated Circuits, IC02 1997 Nov 17 Philips Semiconductors Product specification 10-bit analog-to-digital interface for CCD cameras FEATURES • 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. QUICK REFERENCE DATA SYMBOL VCCA VCCD VCCO ICCA ICCD ICCO ADCres Vi(CDS)(p-p) GCDS fCLK(max) AGCdyn Ntot(rms) Ptot PARAMETER 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 CONDITIONS APPLICATIONS TDA8786; TDA8786A 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. • CCD camera systems. MIN. 4.5 4.5 2.5 − − − − − − 18 − − − TYP. 4.75 4.75 2.6 83 16 1 10 400 6 − 30 0.5 475 MAX. 5.5 5.5 5.5 − − − − 1200 − − − − − UNIT V V V mA mA mA bits mV dB MHz dB LSB mW fCLK = 18 MHz; CL = 20 pF; ramp input gain = 3.5 dB ORDERING INFORMATION TYPE NUMBER TDA8786G TDA8786AG 1997 Nov 17 PACKAGE NAME LQFP48 DESCRIPTION plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm 2 VERSION SOT313-2 Philips Semiconductors Product specification 10-bit analog-to-digital interface for CCD cameras BLOCK DIAGRAM TDA8786; TDA8786A handbook, full pagewidth VCCA3 IN2 47 IN1 46 AGND3 48 45 CDSP2 44 CDSP1 43 CLPCDS 42 CLK 41 DGND2 VCCD2 39 VCCO OE 38 37 40 36 TRACKAND-HOLD TRACKAND-HOLD TRACKAND-HOLD CLOCK GENERATOR 35 OGND TRACKAND-HOLD 19 5 CLAMP TRACKAND-HOLD D9 34 CLAMP ref2 33 STGE AGND1 D8 D7 TDA8786 TDA8786A AMPOUT PBK 4 2 10-BIT ADC AGCOUT CLPOPB 7 1 ref1 PBIN VCCA1 PBOUT ADCIN 8 6 4-BIT DAC 9 10 1 OPTICAL BLACK CLAMP 9-BIT DAC 1 SOFT CLIPPER AGC OUTPUTS BUFFER +6 dB 32 D6 31 D5 30 D4 29 D3 28 D2 27 D1 26 25 10-BIT DAC 8-BIT DAC REGULATOR SERIAL INTERFACE 3 D0 DGND1 OFDOUT CLPADC 11 CLAMP 12 13 14 15 16 17 VRT 18 23 22 21 20 24 VCCD1 MGE361 Vref VCCA2 DACOUT AGND2 STDBY SEN DEC1 VRB SDATA SCLK Fig.1 Block diagram. 1997 Nov 17 3 Philips Semiconductors Product specification 10-bit analog-to-digital interface for CCD cameras PINNING SYMBOL CLPOPB PBK OFDOUT AMPOUT AGND1 VCCA1 AGCOUT PBIN PBOUT ADCIN CLPADC Vref DACOUT AGND2 VCCA2 VRB VRT DEC1 STGE SDATA PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DESCRIPTION TDA8786; TDA8786A optical black clamp control pulse input (active HIGH for TDA8786, active LOW for TDA8786A) pre-blanking control pulse input; if PBK is HIGH (LOW) the signal is replaced by the optical black level for TDA8786 (TDA8786A) analog output of the additional 8-bit control DAC (controlled via the serial interface) CDS amplifier output (fixed gain = +6 dB) analog ground 1 analog supply voltage 1 AGC and soft clipper amplifier signal output optical black clamp and pre-blanking block signal input (from AGCOUT via a capacitor) optical black clamp and pre-blanking block signal output ADC analog signal input (from PBOUT or AGCOUT via a capacitor) clamp control input for ADC analog input signal clamp (active HIGH for TDA8786 and active LOW for TDA8786A) ADC input clamp reference voltage (normally connected to pin VRB or DACOUT) DAC output for ADC clamp level analog ground 2 analog supply voltage 2 ADC reference voltage (BOTTOM) code 0 ADC reference voltage (TOP) code 1023 decoupling 1 (decoupled to ground via a capacitor) CDS offset storage serial data input for the 4 control DACs (9-bit DAC for AGC gain, 4-bit DAC for soft clipper; additional 8-bit DAC for OFD output voltage; 1.


TDA8785 TDA8786 TDA8786A


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