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AD7942 - Pseudo Differential ADC

Description

The AD7942 is a 14-bit, charge redistribution successive approximation, analog-to-digital converter (ADC) that operates from a single 5V power supply, VDD.

Features

  • 14-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.4 LSB typ, ±1 LSB max (±0.0061 % of FSR) S/(N + D): 85 dB @ 20 kHz THD:.
  • 100 dB @ 20 kHz Pseudo-differential analog input range 0 V to VREF with VREF up to VDD No pipeline delay Single-supply 5V operation with 1.8 V/2.5 V/3 V/5 V logic interface Serial interface SPI®/QSPI™/µWire/DSP compatible Daisy chain multiple ADCs and BUSY indicator Power dissipation 1.15 mW @ 2.5 V/100 kSPS, 3.3 mW @ 5 V/100 kSPS, 1.15 µW @ 2.5 V/.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Preliminary Technical Data FEATURES 14-bit resolution with no missing codes Throughput: 250 kSPS INL: ±0.4 LSB typ, ±1 LSB max (±0.0061 % of FSR) S/(N + D): 85 dB @ 20 kHz THD: −100 dB @ 20 kHz Pseudo-differential analog input range 0 V to VREF with VREF up to VDD No pipeline delay Single-supply 5V operation with 1.8 V/2.5 V/3 V/5 V logic interface Serial interface SPI®/QSPI™/µWire/DSP compatible Daisy chain multiple ADCs and BUSY indicator Power dissipation 1.15 mW @ 2.5 V/100 kSPS, 3.3 mW @ 5 V/100 kSPS, 1.15 µW @ 2.5 V/100 SPS Stand-by 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 the 16-Bit AD7685 14-Bit, 250 kSPS PulSAR™ ADC in MSOP/QFN AD7942 APPLICATION DIAGRAM 0.5 TO 5V 2.
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