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
