TS7001 Series ADC

By Touchstone Semiconductor 254

TS7001 Series ADC

The Touchstone Semiconductor TS7001 - a pin-for-pin, 1.5x faster alternative to the AD7887 - is a self-contained, 2-channel, high-speed, micropower, 12-bit analog-to-digital converter (ADC) that operates from a single +2.7 V to +3.6 V power supply. The TS7001 is capable of a 187.5 ksps throughput rate with an external 3 MHz serial clock and draws 0.85 mA supply current.

The wideband input track-and-hold acquires signals in 500ns and features a single-ended sampling topology. Output data coding is straight binary and the ADC is capable of converting full power signals up to 10 MHz. The ADC also contains an integrated 2.5 V reference, or the VREF pin can be overdriven by an external reference.

The TS7001’s provides one or two analog inputs each with an analog input range from 0 to VREF. In two-channel operation, the analog input range is 0 V to VDD. Efficient circuit design ensures low power consumption of 2 mW (typical) for normal operation and 3 μW in power-down operation.

Key Specifications
  • Pin-for-pin, 1.5x faster upgrade to AD7887
  • Single-supply operation: +2.7 V to +3.6 V
  • INL: ±1LSB
  • Shutdown-mode supply current: 1 μA (max)
  • Integrated +2.5 V reference
  • Internal wide-bandwidth track-and-hold
  • 8-pin MSOP packaging
  • SPI®/QSPI™/MICROWIRE™/DSP-compatible serial interfaces
  • One or two single-ended analog inputs
  • Operating temperature range: -40ºC to 85ºC
  • Flexible power/throughput-rate management
    • 0.85 mA at 187.5 ksps (Internal VREF ON)
    • 0.7 mA at 187.5 ksps (Internal VREF OFF)

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