AD7694 Datasheet | Analog Devices

FEATURES 16-bit resolution with no missing codes Throughput: 250 k SPS @ 5 V INL: ±4 LSB max S/(N + D): 92 d B @ 20 k Hz THD: - 106 d B @ 20 k Hz Pseudo-differential analog input range: 0 V to VREF with VREF up to VDD No pipeline delay Single-supply operation: 2.7 V or 5 V Serial interface SPI®/QSPI™/MICROWIRE™/DSP-patible Supply Current: 540 µA @ 2.7 V/100 k SPS, 800 µA @ 5 V/100 k SPS Standby current: 1 n A 8-lead MSOP package Improved 2nd Source to LTC1864 and LTC1864L APPLICATION DIAGRAM 1V TO VDD 2.5V TO 5V 0 TO VREF IN+ IN- VDD SCK SDO CNV 3-WIRE SPI INTERFACE 05003-001 Figure 1. Table 1. MSOP, QFN (LFCSP)/SOT-23, 16-Bit Pul SAR ADC Type True Differential Pseudo Differential/Unipolar Unipolar 100 k SPS AD7684 AD7683 AD7680 250 k SPS AD7687 AD7685 AD7694 500 k SPS AD7688 AD7686 APPLICATIONS Battery-powered equipment Data acquisition Instrumentation Medical instruments Process control GENERAL DESCRIPTION The AD7694 is a 16-bit, charge redistribution, successive approximation, Pul SAR™ analog-to-digital converter (ADC) that operates from a single power supply, VDD, between 2.7 V to 5.25 V. It contains a low power, high speed, 16-bit sampling ADC with no missing codes (B grade), an internal conversion clock, and a serial, SPI-patible interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, it samples an analog input, IN+, between 0 V to REF with respect to a ground sense, IN- . The reference voltage, REF, is applied externally and can be set up to the supply voltage. Its power scales linearly with throughput. The AD7694 is housed in an 8-lead MSOP package with an operating temperature specified from - 40°C to +85°C. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use....