Part A
ADS1271IBPW
Texas Instruments
- Lifecycle
- Active
- Stock
- 2069 Stückzahl
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1230IPW and ADS1271IBPW are not functionally interchangeable despite sharing a TSSOP-16 package and similar supply voltage ranges. The ADS1230IPW is a low-speed, low-power 20-bit delta-sigma ADC with an integrated PGA and on-chip oscillator, while the ADS1271IBPW is a high-speed 24-bit delta-sigma ADC requiring an external clock and offering a different data rate and interface profile. The differences in resolution, data rate, clocking architecture, and analog input structure make direct substitution impractical without a full system redesign.
Different resolution and data rate
Different clocking architecture
Different analog input structure
Different power and interface profile
Parts at a glance
Part B
ADS1230IPW
Texas Instruments
- Lifecycle
- Active
- Stock
- 2859 Stückzahl
- Package
- TSSOP-16
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADS1230IPW | ADS1271IBPW | Why it matters |
|---|---|---|---|
| Resolution (bits) | 20 | 24 | Higher resolution provides finer measurement granularity, which directly affects achievable accuracy and noise-free bit performance in precision sensing applications. |
| Architecture | Delta-sigma (single-channel) | Delta-sigma (single-channel) | Both use delta-sigma conversion, but the ADS1271 offers higher-order filtering and wider bandwidth options, affecting noise shaping and settling behavior. |
| Data rate (SPS) | 10 or 80 | Up to 105k | Maximum output data rate determines how fast the system can sample, which is critical for dynamic or high-speed measurement channels versus slow precision weigh-scale signals. |
| Input type | Differential | Differential | Differential inputs reject common-mode noise; both support this, but the ADS1271 provides wider input range and higher input bandwidth for general-purpose signal chains. |
| Supply voltage | 2.7 V to 5.3 V (analog), 2.7 V to 5.3 V (digital) | 4.75 V to 5.25 V (analog), 1.65 V to 3.6 V (digital) | Supply requirements affect system power design and level compatibility; the ADS1230 is more flexible for low-voltage single-supply designs, while the ADS1271 needs a 5 V analog rail. |
| Interface | Serial (SPI-compatible, 2-wire) | Serial (SPI-compatible) | Interface compatibility determines ease of integration with microcontrollers; both are SPI-like, but the ADS1271 supports higher clock rates and frame-sync modes. |
| Package | TSSOP-16 | TSSOP-16 | Package footprint affects PCB layout and drop-in substitutability; identical TSSOP-16 packages simplify board-level replacement. |
| Operating temperature range | -40°C to +85°C | -40°C to +105°C | Wider temperature range enables use in harsher industrial environments; the ADS1271 supports higher ambient temperatures. |
| Typical application focus | Weigh scales, strain gauges, low-speed precision sensing | Industrial measurement, vibration, high-speed data acquisition | Application focus indicates functional substitutability; the ADS1230 targets slow high-resolution bridge sensors, while the ADS1271 targets wider-bandwidth industrial signal chains. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1271IBPW | ADS1230IPW |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | ADS1271 | - |
| Number of Bits | 24 | 20 |
| Sampling Rate (Per Second) | 105k | - |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential, Single Ended |
| Data Interface | SPI | SPI |
| Configuration | ADC | PGA-ADC |
| Number of A / D Converters | 1 | - |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 5V | 2.7V ~ 5.3V |
| Voltage - Supply, Digital | 1.65V ~ 3.6V | 2.7V ~ 5.3V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
| Sampling Rate(Per Second) | - | 80 |
| Number of A/D Converters | - | 1 |
| Features | - | PGA |
Frequently asked questions
What are the primary differences between the ADS1230IPW and ADS1271IBPW?
The ADS1230IPW is a 20-bit delta-sigma ADC optimized for low-speed, high-resolution bridge sensor applications with a maximum data rate of 80 SPS and a single differential input. The ADS1271IBPW is a 24-bit delta-sigma ADC supporting data rates up to 105 kSPS with a wider signal bandwidth, making it suitable for higher-speed industrial measurement applications. They differ in resolution, data rate, architecture, and target application space.
Do the ADS1230IPW and ADS1271IBPW share the same package and pinout?
Both devices are offered in a 16-pin TSSOP (PW) package, but their pinouts and internal architectures differ. The ADS1230IPW provides a dedicated differential input with on-chip PGA and is designed for bridge sensor interfacing, while the ADS1271IBPW has a different pin configuration supporting its higher-speed delta-sigma modulator and digital filter. They are not pin-for-pin drop-in replacements.
What are the maximum data rates of the ADS1230IPW and ADS1271IBPW?
The ADS1230IPW supports a maximum data rate of 80 SPS (10 SPS and 80 SPS selectable). The ADS1271IBPW supports data rates up to 105 kSPS in High-Speed mode, with additional High-Resolution and Low-Power modes offering lower rates. The ADS1271IBPW is therefore suited for much higher bandwidth signals.
What resolution does each ADC provide?
The ADS1230IPW is a 20-bit delta-sigma ADC. The ADS1271IBPW is a 24-bit delta-sigma ADC. The higher bit resolution of the ADS1271IBPW, combined with its higher data rate, supports applications requiring finer resolution at greater bandwidth.
What are the typical applications for the ADS1230IPW versus the ADS1271IBPW?
The ADS1230IPW is intended for low-frequency, high-resolution sensor applications such as weigh scales, strain gauge bridges, and pressure sensors. The ADS1271IBPW targets higher-speed industrial measurement, including vibration analysis, power monitoring, and multi-channel data acquisition systems where wider signal bandwidth is required.
What supply voltage ranges do the ADS1230IPW and ADS1271IBPW require?
The ADS1230IPW operates from a single analog supply of 2.7 V to 5.3 V with a digital supply of 2.7 V to 5.3 V. The ADS1271IBPW operates from an analog supply of 4.75 V to 5.25 V and a digital supply of 1.65 V to 3.6 V (with a separate I/O supply). Designers must verify supply requirements against the respective datasheets before substitution.
Can the ADS1230IPW be directly substituted with the ADS1271IBPW in an existing design?
No. Although both are 16-pin TSSOP delta-sigma ADCs, they differ in resolution, data rate, pinout, supply requirements, and digital interface timing. A direct substitution is not supported; any replacement requires schematic, layout, and firmware validation against the manufacturer datasheets.
What digital interfaces do the ADS1230IPW and ADS1271IBPW provide?
The ADS1230IPW provides a simple two-wire serial interface (SCLK and DOUT/DRDY) for reading conversion results. The ADS1271IBPW provides a SPI-compatible serial interface with separate DOUT, SCLK, and DRDY/FSYNC signals, supporting both SPI and frame-sync modes. The interface differences must be accounted for in any system redesign.