ADS8361

ADS 836 ADS8361 1 AD S 83 61 SBAS230C – AUGUST 2002 – REVISED SEPTEMBER 2004 Dual, 500kSPS, 16-Bit, 2 + 2 Channel, Simultaneous Sampling ANALOG-TO-DIGITAL CONVERTER FEATURES q q q q q q q q q 2 SIMULTANEOUS 16-BIT DACs 4 FULLY DIFFERENTIAL INPUT CHANNELS 2µs THROUGHPUT PER CHANNEL 4µs TOTAL THROUGHPUT FOR FOUR CHANNELS LOW POWER: 150mW INTERNAL REFERENCE FLEXIBLE SERIAL INTERFACE 16-BIT UPGRADE TO THE 12-BIT ADS7861 PIN COMPATIBLE WITH THE ADS7861 DESCRIPTION The ADS8361 is a dual, 16-bit, 500kSPS, Analog-to-Digital (A/D) converter with four fully differential input channels grouped into two pairs for high-speed, simultaneous signal acquisition. Inputs to the sample-and-hold amplifiers are fully differential and are maintained differentially to the input of the A/D converter. This provides excellent common-mode rejection of 80dB at 50kHz, which is important in high-noise environments. The ADS8361 offers a high-speed, dual serial interface and control inputs to minimize software overhead. The output data for each channel is available as a 16-bit word. The ADS8361 is offered in SSOP-24 and QFN-32 (5x5) packages and is fully specified over the –40°C to +85°C operating range. APPLICATIONS q MOTOR CONTROL q MULTI-AXIS POSITIONING SYSTEMS q 3-PHASE POWER CONTROL CH A0+ CH A0– SAR SHA CDAC CH A1+ CH A1– COMP SERIAL DATA A SERIAL DATA B M0 REFIN Internal 2.5V Reference Serial Interface M1 A0 CLOCK CS REFOUT CH B0+ CH B0– SHA CDAC COMP RD BUSY CONVST CH B1+ CH B1– SA...