AD7685 PDF Datasheet
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Description
This is 250 kSPS PulSAR ADC. 16-Bit, 250 kSPS PulSAR ADC in MSOP, QFN AD7685
FEATURES
16-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.6 LSB typical, ±2 LSB maximum (±0.003% of FSR) SINAD: 93.5 dB @ 20 kH- THD: 110 dB @ 20 kH- Pseudo differential analog input range 0 V to VREF with VREF up to VDD No pipeline delay Single-supply operation 2.3 V to 5.5 V with 1.8 V to 5 V logic interface Serial interface SPI®-, QSPI™-, MICROWIRE™-, DSP-compatible Daisy-chain multiple ADCs, BUSY indicator Power dissipation 1.4 μW @ 2.5 V, 100 SPS 1.35 mW @ 2.5 V, 100 kSPS, 4 mW @ 5 V, 100 kSPS Standby current: 1 nA 10-lead package: MSOP (MSOP-8 size) and 3 mm × 3 mm QFN (LFCSP) (SOT-23 size) Pin-for-pin-compatible with 10-lead MSOP, QFN PulSAR® ADCs
APPLICATION DIAGRAM
0.5V TO VDD 2.5V TO 5V
0 TO VREF IN+ IN
REF VDD VIO SDI
1.8V TO VDD 3- OR 4-WIRE INTERFACE (SPI, DAISY CHAIN, CS)
AD7685
GND
SCK SDO CNV
Figure 2.
Table 1. MSOP, QFN (LFCSP), SOT-23 14-, 16-, 18-Bit PulSAR ADC
Type 18-Bit True Differential.