Analog Devices AD1555
The AD1555 outputs a ones-density bitstream proportional to the analog input. When used in conjunction with the AD1556 digital filter/ decimator, a high performance ADC is realized. The continuous-time analog modulator input architecture avoids the need for an external antialias filter.| Part No. | AD1555 |
|---|---|
| Datasheet | AD1555 Download |
| Manufacturer |  Analog Devices |
| Description | 24-Bit ADC WITH LOW NOISE PGA |
| Buy | Stock & Price |
FEATURES
AD1555 Fourth Order ⌺- ⌬ Modulator Large Dynamic Range 116 dB Min, 120 dB Typical @ 1 ms 117 dB Typical @ 0.5 ms Low Input Noise: 80 nV rms @ 4 ms with Gain of 34,128 Low Distortion: –111 dB Max, –120 dB Typical Low Intermodulation: 122 dB Sampling Rate at 256 kSPS Very High Jitter Tolerance No External Antialias Filter Required Programmable Gain Front End Input Range: ؎2.25 V Robust Inputs Gain Settings: 1, 2.5, 8.5, 34, 128 Common-Mode Rejection (DC to 1 kHz) 93 dB Min, 101 dB Typical @ Gain of 1 77 mW Typical Low Power Dissipation Standby Modes AD1556 FIR Digital Filter/Decimator Serial or Parallel Selection of Configuration Output Word Rates: 250 SPS to 16 kSPS 6.2 mW Typ Low Power Dissipation 70●W in Standby Mode Reference Design and Evaluation Board with Software Available
APPLICATIONS
Seismic Data Acquisition Systems Chromatography Automatic Test EquipmentGENERAL DESCRIPTION
24-Bit ⌺-⌬ ADC with Low Noise PGA AD1555/AD1556 high dynamic range measurement applications. The programmable gain front end simplifies system design, extends the dynamic range, and reduces the system board area.
