The ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution. The data rate is 1.25 mega samples per second (MSPS), the bandwidth (-3dB) is 615kHz, and passband ripple is less than ±0.0025dB (to 550kHz). Both devices offer the same outstanding performance at these speeds with a signal-to-noise ratio up to 93dB, total harmonic distortion down to -101dB, and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in first-out buffer (FIFO) for the output data.
The Texas Instruments ADS1625 and ADS1626 are high-speed, high-precision, delta-sigma analog-to-digital converters (ADCs) with 18-bit resolution and a data rate of 1.25 mega samples per second (MSPS). These devices are designed for demanding measurement requirements in scientific instrumentation, automated test equipment, data acquisition, and medical imaging applications.
Both devices offer a signal-to-noise ratio up to 93dB and a spurious-free dynamic range up to 103dB. The ADS1626 includes an adjustable first-in, first-out (FIFO) buffer for output data, while the ADS1625 does not. They operate from a +5V analog supply and support a digital interface voltage range of +2.7V to +5.25V.
| Resolution | 18 Bits |
|---|---|
| Data Rate | 1.25MSPS |
| Operating Temperature Range | -40 to +85 °C |
| Analog Supply Voltage | 4.75 to 5.25 V |
| Digital Supply Voltage | 2.7 to 3.3 V |
Yes, the ADS1626 includes an adjustable first-in, first-out buffer for the output data.
The bandwidth (-3dB) is 615kHz.
Yes, the input signal is measured against a voltage reference that can be generated on-chip or supplied externally.