AD7980-EP Datasheet

• 16-bit resolution with no missing codes
• Throughput: 1 MSPS
• Low power dissipation
  • 4 mW at 1 MSPS (VDD only)
  • 7 mW at 1 MSPS (total)
  • 70 μW at 10 kSPS
• INL: ±0.6 LSB typical, ±1.5 LSB maximum
• SINAD: 91 dB @ 10 kHz
• THD: −114 dB @ 10 kHz
• Pseudo differential analog input range
  • 0 V to VREF with VREF between 2.5 V to 5.5 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
• Daisy-chain multiple ADCs and busy indicator
• Supports defense and aerospace applications (AQEC)
• Controlled manufacturing baseline
• One assembly/test site
• One fabrication site
• Enhanced product change notification
• Qualification data available on request
• 10-lead MSOP
• Military temperature range: −55°C to +125°C

• Battery-powered equipment
• Communications
• ATE
• Data acquisitions
• Medical instruments

The AD7980-EP1 is a 16-bit, successive approximation, analogto-digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC and a versatile serial interface port. 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 independent of the supply voltage, VDD. Its power scales linearly with throughput.

The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.

The AD7980-EP is housed in a 10-lead MSOP with operation specified from −55°C to +125°C.