Product Details
●The AD7655 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 part 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.
●Product Highlights
● 1. Multichannel ADC.
●The AD7655 features 4-channel inputs with two sample-and-hold circuits that allow simultaneous sampling.
● 2. Fast Throughput.
●The AD7655 is a 500 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.
● 3. Single-Supply Operation.
●The AD7655 operates from a single 5 V supply. In impulse mode, its power dissipation decreases with throughput.
● 4. Serial or Parallel Interface.
●Versatile parallel or 2-wire serial interface arrangements are compatible with both 3 V and 5 V logic.
●Applications
● AC motor control
● 3-phase power control
● 4-channel data acquisition
● Uninterrupted power supplies
● Communications
●### Features and Benefits
● 4-channel, 16-bit resolution ADC
● 2 track-and-hold amplifiers
● Throughput
● 500 kSPS (normal mode)
● 444 kSPS (impulse mode)
● Analog input voltage range: 0 V to 5 V
● No pipeline delay
● Parallel and serial 5 V/3 V interface
● Refer to data sheet for additional features
●AD7655-EP supports defense and aerospace applications (AQEC standard)
● Download AD7655-EP Data Sheet (pdf)
● Military temperature range (−55°C to +125°C)
● Controlled manufacturing baseline
● Enhanced product change notification
● Qualification data available on request
● V62/14620 DSCC Drawing Number
