ADI AD7916BRMZ

The AD7915/AD7916 are 16-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. They contain a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7915/AD7916 sample the voltage difference between the IN+ and IN- pins. The voltages on these pins typically swing in opposite phases between 0V and VREF. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The power consumption of the AD7915/AD7916 scales linearly with throughput. The AD7915/AD7916 are serial peripheral interface (SPI) compatible, which features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus. They are compatible with 1.8V, 2.5V, 3V, and 5V logic using the separate VIO supply. The AD7915/AD7916 are available in a 10-lead MSOP or a 10-lead LFCSP with operation specified from -40°C to +125°C.

• Low power dissipation: AD7915 4 mW at 1 MSPS (VDD only), 7 mW at 1 MSPS (total); AD7916 2 mW at 500 kSPS (VDD only), 3.7 mW at 500 kSPS (total)
• 16-bit resolution with no missing codes
• Throughput: 1 MSPS (AD7915)/500 kSPS (AD7916)
• INL: ±0.4 LSB typical, ±1 LSB maximum
• SNR: 94 dB at 1 kHz, VREF = 5V
• SINAD: 93.5 dB at 1 kHz, VREF = 5V
• THD: −118.5 dB at 1 kHz
• Dynamic range: 95.5 dB, VREF = 5V
• True differential analog input range: ±VREF, 0 V to VREF with VREF between 2.4 V and 5.1 V
• No pipeline delay
• Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
• Proprietary serial interface: SPI-/QSPI-/MICROWIRE-/DSP compatible
• Ability to daisy-chain multiple ADCs
• 10-lead packages: MSOP and 3 mm×3 mm LFCSP

• Battery-powered equipment
• Data acquisition systems
• Medical instruments
• Seismic data acquisition systems