DDC232

www.DataSheet4U.com BurrĆBrown Products from Texas Instruments DDC232 SBAS331C – AUGUST 2004 – REVISED SEPTEMBER 2006 32-Channel, Current-Input Analog-to-Digital Converter FEATURES SINGLE-CHIP SOLUTION TO DIRECTLY MEASURE 32 LOW-LEVEL CURRENTS HIGH-PRECISION, TRUE INTEGRATING FUNCTION INTEGRAL LINEARITY: ±0.025% of Reading ±1.0ppm of FSR VERY LOW NOISE: 5.3ppm of FSR LOW POWER: 7mW/channel ADJUSTABLE FULL-SCALE RANGE ADJUSTABLE DATA RATE: Up to 6kSPS – Integration Times Down to 166.5µs DAISY-CHAINABLE SERIAL INTERFACE The DDC232 has a serial interface designed for daisy-chaining in multi-device systems. Simply connect the output of one device to the input of the next to create the chain. Common clocking feeds all the devices in the chain so that the digital overhead in a multi-DDC232 system is minimal. The DDC232 uses a +5V analog supply and a +2.7V to +3.6V digital supply. Operating over the temperature range of 0°C to +70°C, the DDC232 is offered in a BGA-64 package. AVDD VREF DVDD IN1 Dual Switched Integrator CLK ∆Σ Modulator CONV Digital Filter Configuration and Control DIN_CFG CLK_CFG RESET APPLICATIONS CT SCANNER DAS PHOTODIODE SENSORS X-RAY DETECTION SYSTEMS Protected by US Patent #5841310 IN2 Dual Switched Integrator IN3 Dual Switched Integrator ∆Σ Modulator IN4 Dual Switched Integrator DESCRIPTION The DDC232 is a 20-bit, 32-channel, current-input analog-to-digital (A/D) converter. It combines both current-to-voltage and A/D conversio...