The ADS127L01 is a 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) with data rates up to 512 kSPS. This device offers a unique combination of excellent dc accuracy and outstanding ac performance. The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The integrated decimation filter suppresses modulator out-of-band noise. In addition to al low-latency filter, the ADS127L01 provides multiple Wideband filters with less than ±0.00004 dB of ripple, and an option for –116-dB stop-band attenuation at the Nyquist rate.
Traditionally, industrial delta-sigma ADCs that offer good drift performance use digital filters with large passband droop. As a result, industrial delta-sigma ADCs have limited signal bandwidth and are mostly suited for dc measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specifications are significantly weaker than industrial counterparts. The ADS127L01 combines these converters, providing high-precision industrial measurement with excellent dc and ac specifications over an extended industrial temperature range of –40°C to +125°C.
A variety of operating modes allow for optimization of speed, resolution, and power. A programmable serial interface with one of three options (SPI, frame-sync slave, or frame-sync master) provides convenient interfacing across isolation barriers to microcontrollers or digital signal processors (DSPs).
|Sample Rate (Max) (kSPS)|
|Number of input channels|
|Operating temperature range (C)|
|Approx. price (US$)|
|Power consumption (Typ) (mW)|
|Package size: mm2:W x L (PKG)|
|Input range (Max) (V)|
|Input range (Min) (V)|
|Analog voltage AVDD (Min) (V)|
|Analog voltage AVDD (Max) (V)|
|Digital supply (Min) (V)|
|Digital supply (Max) (V)|
|THD (Typ) (dB)|
|-40 to 125||-40 to 105||-40 to 125||-40 to 105|
|TQFP | 32||TSSOP | 16||HTQFP | 64||HTQFP | 64|
|6.95 | 1ku||6.31 | 1ku||14.65 | 1ku||25.15 | 1ku|
|32TQFP: 49 mm2: 7 x 7 (TQFP | 32)||16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)||64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)||64HTQFP: 144 mm2: 12 x 12 (HTQFP | 64)|
||Simultaneous Sampling||Simultaneous Sampling|
|Order now||Order now||Order now||Order now|