AD7661

www.DataSheet4U.com 16-Bit 100 kSPS PulSAR® Unipolar ADC with Reference AD7661 FEATURES 2.5 V internal reference: typical drift 3 ppm/°C Guaranteed max drift 15 ppm/°C Throughput: 100 kSPS INL: ±2.5 LSB max (±0.0038% of full scale) 16-bit resolution with no missing codes S/(N+D): 88 dB min @ 20 kHz THD: –96 dB max @ 20 kHz Analog input voltage range: 0 V to 2.5 V Both AC and DC specifications No pipeline delay Parallel and serial 5 V/3 V interface SPI®/QSPITM/MICROWIRETM/DSP compatible Single 5 V supply operation Power dissipation 16 mW typ, 160 µW @ 1 kSPS without REF 40 mW typ with REF 48-lead LQFP and 48-lead LFCSP packages Pin-to-pin compatible with PulSAR ADCs FUNCTIONAL BLOCK DIAGRAM REFBUFIN REF REFGND AGND AVDD REF DVDD DGND OVDD SERIAL PORT SWITCHED CAP DAC PARALLEL INTERFACE CLOCK CONTROL LOGIC AND CALIBRATION CIRCUITRY 16 DATA[15:0] BUSY RD CS SER/PAR 03033-0-001 AD7661 OGND IN INGND PDREF PDBUF PD RESET OB/2C BYTESWAP CNVST Figure 1. Functional Block Diagram Table 1. PulSAR Selection Type/kSPS PseudoDifferential True Bipolar True Differential 18-Bit Multichannel/ Simultaneous 100–250 AD7651 AD7660/AD7661 AD7663 AD7675 AD7678 500–570 AD7650/AD7652 AD7664/AD7666 AD7665 AD7676 AD7679 AD7654 AD7655 800– 1000 AD7653 AD7667 AD7671 AD7677 AD7674 APPLICATIONS Data acquisition Medical instruments Digital signal processing Spectrum analysis Instrumentation Battery-powered systems Process control PRODUCT HIGHLIGHTS 1. Fast Throughput. The AD7661 is a 100 kSPS, char...