AD7654ACPZ

模数转换器 - ADC Dual 16B 2CH Simult Sampling 500kSPS

Product Details

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.

Applications

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AC motor control

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3-phase power control

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4-channel data acquisition

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Uninterrupted power supplies

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Communications

Product Highlights

1. Simultaneous Sampling.

The AD7654 features two sample-and-hold circuits that allow simultaneous sampling. It provides inputs for four channels.

2. Fast Throughput.

The AD7654 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.

3. Superior INL and No Missing Codes.

The AD7654 has a maximum integral nonlinearity of 3.5 LSB with no missing 16-bit codes.

4. Single-Supply Operation.

The AD7654 operates from a single 5 V supply. In impulse mode, its power dissipation decreases with throughput.

5. Serial or Parallel Interface.

Versatile parallel or 2-wire serial interface arrangement is compatible with both 3 V and 5 V logic.

### Features and Benefits

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Dual, 16-bit, 2-channel simultaneous sampling ADC

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16-bit resolution with no missing codes

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Throughput:

500 kSPS normal mode

444 kSPS impulse mode

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INL: ±3.5 LSB max ±0.0053% of full scale

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SNR: 89 dB typ at 100 kHz

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THD: −100 dB at +100 kHz

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Analog input voltage range: 0 V to 5 V

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No pipeline delay

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Parallel and serial 5 V/3 V interface

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SPI®/QSPI™/MICROWIRE™/ DSP compatible

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Single 5 V supply operation

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See data sheet for additional features