AD7606-4 Datasheet

• 4 simultaneously sampled inputs
• True bipolar analog input ranges: ±10 V, ±5 V
• Pin to pin compatible with the state-of-the-art AD7606B
• Single 5 V analog supply and 2.3 V to 5 V V_DRIVE
• Fully integrated data acquisition solution
  • Analog input clamp protection
  • Input buffer with 1 MΩ analog input impedance
  • Second-order antialiasing analog filter
  • On-chip accurate reference and reference buffer
  • 16-bit ADC with 200 kSPS on all channels
  • Oversampling capability with digital filter

• Flexible parallel/serial interface
  • SPI/QSPI^™/MICROWIRE^™/DSP compatible
• Performance
  • 7 kV ESD rating on analog input channels
  • 95.5 dB SNR, −107 dB THD
  • ±0.5 LSB INL, ±0.5 LSB DNL
  • Low power: 100 mW
  • Standby mode: 25 mW
• Temperature range: −40°C to +85°C
• 64-lead LQFP package

• Power-line monitoring and protection systems
• Multiphase motor control
• Instrumentation and control systems
• Multiaxis positioning systems
• Data acquisition systems (DAS)

The AD7606-4 are 16-bit, simultaneous sampling, analog-to-digital data acquisition systems (DAS) with four channels, respectively. Each part contains analog input clamp protection, a second-order antialiasing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to-digital converter (ADC), a flexible digital filter, a 2.5 V reference and reference buffer, and high speed serial and parallel interfaces.

The AD7606-4 operate from a single 5 V supply and can accommodate ±10 V and ±5 V true bipolar input signals while sampling at throughput rates up to 200 kSPS for all channels. The input clamp protection circuitry can tolerate voltages up to ±16.5 V. The AD7606 has 1 MΩ analog input impedance regardless of sampling frequency. The single supply operation, on-chip filtering, and high input impedance eliminate the need for driver op amps and external bipolar supplies. The AD7606-4 antialiasing filter has a 3 dB cutoff frequency of 22 kHz and provides 40 dB antialias rejection when sampling at 200 kSPS. The flexible digital filter is pin driven, yields improvements in SNR, and reduces the 3 dB bandwidth.