The ADS1262 and ADS1263 are low-noise, low-drift, 38.4-kSPS, delta-sigma (ΔΣ) ADCs with an integrated PGA, reference, and internal fault monitors. The ADS1263 integrates an auxiliary, 24-bit, ΔΣ ADC intended for background measurements. The sensor-ready ADCs provide complete, high-accuracy, one-chip measurement solutions for the most-demanding sensor applications, including weigh scales, strain-gauge sensors, thermocouples, and resistance temperature devices (RTD).
The ADCs are comprised of a low-noise, CMOS PGA (gains 1 to 32), a ΔΣ modulator, followed by a programmable digital filter. The flexible analog front-end (AFE) incorporates two sensor-excitation current sources suitable for direct RTD measurement.
A single-cycle settling digital filter maximizes multiple-input conversion throughput, while providing 130-dB rejection of 50-Hz and 60-Hz line cycle interference.
The ADS1262 and ADS1263 are pin and functional compatible. These devices are available in a 28-pin TSSOP package and are fully specified over the –40°C to +125°C temperature range.
| Part number | Order | Resolution (Bits) | Sample rate (Max) (kSPS) | Number of input channels | Interface | Operating temperature range (C) | Package Group | Approx. price (US$) | Power consumption (Typ) (mW) | Package size: mm2:W x L (PKG) | Architecture | Input type | Multi-channel configuration | Reference mode | Features | 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) | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ADS1262 |
|
32 | 38 | 10 | SPI | -40 to 125 | TSSOP | 28 | 8.90 | 1ku | 27 | 28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28) | Delta-Sigma |
Differential
Single-Ended |
Multiplexed |
Ext
Int |
50/60 Hz Rejection
Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor |
2.5
5 |
-2.5
0 |
4.75 | 5.25 | 2.7 | 5.25 | Catalog |
| ADS1220 |
|
24 | 2 | 4 | SPI | -40 to 125 |
TSSOP | 16
VQFN | 16 |
3.95 | 1ku | 1.4 |
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16VQFN: 12 mm2: 3.5 x 3.5 (VQFN | 16) |
Delta-Sigma |
Differential
Single-Ended |
Multiplexed |
Ext
Int Supply |
50/60 Hz Rejection
Excitation Current Sources (iDACs) Oscillator PGA Temp Sensor |
2.85
5.6 |
-2.85
0 |
2.3 | 5.5 | 2.3 | 5.5 | Catalog |
| ADS1248 |
|
24 | 2 | 8 | SPI | -40 to 125 | TSSOP | 28 | 5.05 | 1ku | 2.3 | 28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28) | Delta-Sigma |
Differential
Single-Ended |
Multiplexed |
Ext
Int |
50/60 Hz Rejection
Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor |
2.125
4.25 |
-2.125
0 |
2.7 | 5.25 | 2.7 | 5.25 | Catalog |
| ADS124S06 |
|
24 | 4 | 6 | SPI | -50 to 125 |
TQFP | 32
VQFN | 32 |
4.45 | 1ku | 1.75 |
32TQFP: 49 mm2: 7 x 7 (TQFP | 32)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32) |
Delta-Sigma |
Differential
Single-Ended |
Multiplexed |
Ext
Int |
50/60 Hz Rejection
Excitation Current Sources (iDACs) GPIO Oscillator PGA Temp Sensor |
2.625
5.25 |
-2.625
0 |
2.7 | 5.25 |
