25 Msps analog-to-digital interface for CCD cameras

www.DataSheet4U.com INTEGRATED CIRCUITS DATA SHEET TDA9952 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras Preliminary specification Supersedes data of 2001 Jul 04 2002 Aug 21 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras FEATURES • Sample rate = 25 Msps;10-bit resolution • Single 3.0 V supply operation (2.2 to 3.6 V operation for the digital outputs) • Low power consumption: only 115 mW at 2.7 V • Power consumption in standby mode: 4.5 mW (typical value) • Programmable gain amplifier: gain range = 36 dB in 0.1 dB steps • Correlated double sampling • Internal input buffer for the correlated double sampling • Fully programmable via a 3-wire serial interface • 8-bit DAC included for external analog settings • TTL-compatible inputs and CMOS-compatible outputs. APPLICATIONS • Video camcorders • Digital still cameras • PC-cameras. ORDERING INFORMATION PACKAGES TYPE NUMBER NAME TDA9952HL TDA9952HN LQFP48 HVQFN48 DESCRIPTION plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm plastic, heatsink very thin quad flat package; no leads; 48 terminals; body 7 × 7 × 0.85 mm GENERAL DESCRIPTION TDA9952 The TDA9952 is a 10-bit analog-to-digital interface for CCD cameras. The device consists of a Correlated Double Sampling (CDS) circuit, a digitally Programmable Gain Amplifier (PGA), a black level clamp and a 10-bit Analog-to-Digital Converter (ADC). An internal CDS input buffer is incorporated in order to avoid using an external buffer that would consume more power and therefore optimizing the application for low noise, low power working. The PGA gain, the ADC clamp level and other settings are controlled via a 3-wire serial digital interface. An additional DAC is provided for system controls. The TDA9952 operates from a single 3 V power supply (2.7 V minimum) and dissipates 135 mW (typical value). VERSION SOT313-2 SOT619-1 2002 Aug 21 2 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras QUICK REFERENCE DATA SYMBOL VCCA VCCD VCCO ICCA ICCD ICCO ADCres Vi(CDS)(p-p) fpix(max) fpix(min) DRPGA Ntot(rms) Ein(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 maximum CDS input voltage (peak-to-peak value) maximum pixel rate minimum pixel rate PGA dynamic range total noise from CDS input to ADC output (RMS value) equivalent input noise voltage (RMS value) total power consumption PGA code = 00; see Fig.8 PGA code = 383 VCCA = VCCD = 3 V; VCCO = 2.5 V VCCA = VCCD = 2.7 V; VCCO = 2.2 V standby mode OCCD(max) = ±100 mV OCCD(max) = ±200 mV VCC = 2.85 V VCC ≥ 3.0 V all clamps active fpix = 25 MHz CONDITIONS MIN. 2.7 2.7 2.2 − − TYP. 3.0 3.0 2.5 43 2.0 0.5 10 − − − − − 36 0.4 145 135 115 4.5 TDA9952 MAX. 3.6 3.6 3.6 − − − − − − − 1 2 − − − − − − UNIT V V V mA mA mA bits mV mV MHz MHz MHz dB LSB µV mW mW mW fpix = 25 MHz; CL = 10 pF; − input ramp response time is 800 µs − 650 800 25 − − − − − − − − 2002 Aug 21 3 This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in _white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ... 2002 Aug 21 SHP 45 SHD 46 VCCA1 1 AGND1 2 VCCA6 41 AGND6 CLPOB CLPDM 40 44 48 BLK CLK OE 43 47 39 22 21 CDS CLOCK GENERATOR 37 38 DGND1 VCCD1 OGND2 VCCO2 CPCDS1 CPCDS2 VCCA2 AGND2 IN 8 www.DataSheet4U.com BLOCK DIAGRAM Philips Semiconductors 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras TDA9952 CLAMP 9 7 3 4 CORRELATED DOUBLE SAMPLING PGA SHIFT BLACK LEVEL SHIFT 36 35 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 input buffer 34 33 DATA FLIPFLOP 32 OUTPUT BUFFER 31 30 29 28 27 BLANKING 10-bit ADC Fig.1 Block diagram. handbook, full pagewidth 4 n.c. 25, 26 CLAMP VCCA3 AGND3 14 5 OFD DAC OFDOUT 11 12 6 TEST AGND4 Vref 9-BIT REGISTER 6-BIT REGISTER 24 23 8-BIT REGISTER INIT-ONPOWER SERIAL INTERFACE 10 OGND1 VCCO1 DCLPC REGULATOR 20 42 13 15 16 19 18 17 FCE629 Preliminary specification AGND5 VCCA4 VCCA5 SEN SCLK SDATA VSYNC STDBY TDA9952 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras PINNING SYMBOL VCCA1 AGND1 AGND2 IN AGND3 AGND4 VCCA2 CPCDS1 CPCDS2 DCLPC OFDOUT TEST AGND5 VCCA3 VCCA4 VCCA5 SDATA SCLK SEN VSYNC VCCD1 DGND1 VCCO1 OGND1 n.c. n.c. D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 OGND2 VCCO2 OE AGND6 2002 Aug 21 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 analog supply voltage1 analog ground 1 analog ground 2 input signal from CCD analog ground 3 analog ground 4 analog supply voltage 2 clamp storage capacitor pin 1 clamp storage capacitor pin 2 regulator decoupling pin analog output of the additional 8-bit control DAC test mode input pin (should be connected to AGND5) analog ground 5 analog supply voltage 3 analog supply voltage 4 analog supply voltage 5 serial data input for serial interface control serial clock input for serial interface strobe pin for serial interface vertical sync pulse input digital supply voltage 1 digital ground 1 digital output supply voltage 1 digital output ground 1 not connected not connected ADC digital output 0 (LSB) ADC digital output 1 ADC digital output 2 ADC digital output 3 ADC digital output 4 ADC digital output 5 ADC digital output 6 ADC digital output 7 ADC digital output 8 ADC digital output 9 (MSB) digital output ground 2 digital output supply voltage 2 DESCRIPTION TDA9952 output enable control input (LOW: outputs active; HIGH: outputs in high-impedance) analog ground 6 5 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras SYMBOL VCCA6 STDBY BLK CLPOB SHP SHD CLK CLPDM PIN 41 42 43 44 45 46 47 48 analog supply voltage 6 DESCRIPTION TDA9952 standby mode control input (LOW: TDA9952 active; HIGH: TDA9952 standby) blanking control input clamp pulse input at optical black preset sample-and-hold pulse input data sample-and-hold pulse input data clock input clamp pulse input at dummy pixel handbook, full pagewidth VCCA1 AGND1 AGND2 IN AGND3 AGND4 VCCA2 CPCDS1 CPCDS2 1 2 3 4 5 6 37 OGND2 48 CLPDM 38 VCCO2 40 AGND6 44 CLPOB 41 VCCA6 42 STDBY 46 SHD 45 SHP 47 CLK 43 BLK 39 OE 36 D9 35 D8 34 D7 33 D6 32 D5 31 D4 TDA9952HL 7 8 9 30 D3 29 D2 28 D1 27 D0 26 n.c. 25 n.c. DCLPC 10 OFDOUT 11 TEST 12 AGND5 13 VCCA3 14 VCCA4 15 VCCA5 16 SDATA 17 SCLK 18 SEN 19 VSYNC 20 VCCD1 21 DGND1 22 VCCO1 23 OGND1 24 FCE483 Note: the HVQFN package pin configuration is identical. Fig.2 Pin configuration. 2002 Aug 21 6 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL VCCA VCCD VCCO ∆VCC PARAMETER analog supply voltage digital supply voltage digital outputs supply voltage supply voltage difference between VCCA and VCCD between VCCA and VCCO between VCCD and VCCO Vi Io Tstg Tamb Tj Note 1. All supplies are connected together. HANDLING input voltage data output current storage temperature ambient temperature junction temperature referenced to AGND −0.5 −0.5 −0.5 −0.3 − −55 −20 − +0.5 +1.2 +1.2 +6.5 ±10 CONDITIONS note 1 note 1 note 1 MIN. −0.3 −0.3 −0.3 TDA9952 MAX. +4.5 +4.5 +4.5 V V V V V V V UNIT mA °C °C °C +150 +75 150 Inputs and outputs are protected against electrostatic discharges in normal handling. However, to be totally safe, it is desirable to take normal precautions appropriate to handling integrated circuits. THERMAL CHARACTERISTICS SYMBOL Rth(j-a) PARAMETER thermal resistance from junction to ambient CONDITIONS in free air VALUE 76 UNIT K/W 2002 Aug 21 7 www.DataSheet4U.com Philips Semiconductors Preliminary specification 10-bit, 3.0 V, 25 Msps analog-to-digital interface for CCD cameras CHARACTERISTICS VCCA = VCCD = 3.0 V; VCCO = 2.5 V; fpix = 25 MHz; Tamb = −20 to +75 °C; unless otherwise specified. SYMBOL Supplies VCCA VCCD VCCO ICCA ICCD ICCO analog supply voltage digital supply voltage digital outputs supply voltage analog supply current digital supply current digital outputs supply current total power consumption CL = 10 pF on all data outputs; input ramp of 800 µs duration VCCA = VCCD = 3 V; VCCO = 2.5 V VCCA = VCCD = 2.7 V; VCCO = 2.2 V standby mode Digital inputs PINS SHP, SHD AND CLK (REFERENCED TO DGND) VIL VIH Ii Ci VIL VIH Ii Clamps GLOBAL CHARACTERISTICS OF THE CLAMP LOOPS tW(clamp) clamp active pulse width in PGA code = 383 for number of pixels maximum 6 LSB error for a CPCDS capacitance of 1 µF; clamp code = 32 CDS input clamp transconductance 15 − − LOW-level input voltage HIGH-level input voltage input current input capacitance 0 ≤ Vi ≤ 5.5 V 0 2.0 −3 − 0 2.0 0 ≤ Vi ≤ 5.5 V −2 − − − − − − − all clamps active 2.7 2.7 2.2 − − − 3.0 3.0 2.5 43 2.0 0.5 PARAMETER CONDITIONS MIN. TYP. TDA9952 MAX. UNIT 3.6 3.6 3.6 − − − V V V mA mA mA Ptot − − − 135 115 4.5 − − − mW mW mW 0.8 5.5 +3 2 V V µA pF PINS CLPDM, CLPOB, SEN, SCLK, SDATA STBY, OE, BLK AND VSYNC LOW-level input voltage HIGH-level input voltage input current 0.8 5.5 +2 V V µA pixels INPUT CLAMP (DRIVEN BY CLPDM) gm(CDS) − 15 − mS 2002 Aug 21