Features and Benefits
- Dual, 16-bit, 2-channel simultaneous sampling ADC
- 16-bit resolution with no missing codes
500 kSPS (normal mode)
444 kSPS (impulse mode)
- INL: ±3.5 LSB max (±0.0053% of full scale)
- SNR: 89 dB typ at 100 kHz
- THD: −100 dB at +100 kHz
- Analog input voltage range: 0 V to 5 V
- No pipeline delay
- Parallel and serial 5 V/3 V interface
- SPI®/QSPI™/MICROWIRE™/ DSP compatible
- Single 5 V supply operation
- See data sheet for additional features
The AD7654 is a low cost, simultaneous sampling, dual-channel, 16-bit, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains two low noise, wide bandwidth, track-and-hold amplifiers that allow simultaneous sampling, a high speed 16-bit sampling ADC, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports. Each track-and-hold has a multiplexer in front to provide a 4-channel input ADC. The A0 multiplexer control input allows the choice of simultaneously sampling input pairs INA1/INB1 (A0 = low) or INA2/INB2 (A0 = high). The device features a very high sampling rate mode (normal) and, for low power applications, a reduced power mode (impulse) where the power is scaled with the throughput. Operation is specified from −40°C to +85°C.
- AC motor control
- 3-phase power control
- 4-channel data acquisition
- Uninterrupted power supplies
- Simultaneous Sampling.
The AD7654 features two sample-and-hold circuits that allow simultaneous sampling. It provides inputs for four channels.
- Fast Throughput.
The AD7654 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.
- Superior INL and No Missing Codes.
The AD7654 has a maximum integral nonlinearity of 3.5 LSB with no missing 16-bit codes.
- Single-Supply Operation.
The AD7654 operates from a single 5 V supply. In impulse mode, its power dissipation decreases with throughput.
- Serial or Parallel Interface.
Versatile parallel or 2-wire serial interface arrangement is compatible with both 3 V and 5 V logic.
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
The EVAL-AD7654CBZ is a fully featured evaluation kit for the AD7654. This board operates in stand alone mode or in conjunction with the Evaluation Controller board . When operated with the Evaluation Controller board, software is provided enabling the user to perform detailed analysis of the ADC's performance. This software includes the technical note describing the operation and set up of the evaluation board in standalone operation or when operated with the Evaluation Controller board.
Documentation & Resources
AD7654 Companion Parts
Recommended High Accuracy, Precision References - 2.5V
- For applications requiring the lowest noise performance and output trim adjust: ADR441.
- For wide supply applications: AD780.
- For high accuracy, low noise, low temperature drift: ADR421, ADR431.
- For cost sensitive applications: AD1582, ADR391.
Recommended Driver Amplifiers
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.