Part A
ADS1230IPWR
Texas Instruments
- Lifecycle
- Active
- Stock
- 7361 PCS
- Package
- TSSOP-16
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS1230IPWR and ADS1222IPWRG4 share a common TSSOP-16 footprint and 2.7 V to 5.5 V supply range, making the ADS1222IPWRG4 a viable functional candidate for the ADS1230IPWR in low-speed, low-channel-count precision sensing designs. However, the two devices differ in resolution, data rate, and input architecture, so the replacement must be validated against the target application's accuracy, throughput, and signal-conditioning requirements before adoption.
Package Type
High match
Supply Voltage Range
High match
Resolution
Validation required
Input Architecture
Not compatible
Parts at a glance
Part B
ADS1222IPWRG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 4722 PCS
- Package
- TSSOP-14
- Series
- Acquisition de données - Convertisseur analogique - numérique (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 | ADS1230IPWR | ADS1222IPWRG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 20 | 24 | Higher resolution enables detection of smaller signal changes, which is critical for precision sensor and bridge measurements. |
| Number of input channels | 1 (differential) | 2 (differential) | Channel count determines how many independent signal sources can be measured without external multiplexing. |
| Input type / PGA | Differential, fixed gain (128) | Differential, programmable gain (1 to 128) | A programmable gain amplifier allows adaptation to different sensor signal amplitudes, while a fixed gain restricts usable input range. |
| Data rate (SPS) | 10 or 80 | Up to 2 kSPS (programmable) | Data rate affects measurement speed and noise trade-off; faster rates suit dynamic signals while slower rates improve noise performance. |
| Interface | SPI-compatible (2-wire, read-only) | SPI-compatible (bidirectional) | Interface compatibility determines whether the part can be dropped into an existing digital bus and whether configuration registers can be written. |
| Supply voltage range | 2.7 V to 5.3 V | 2.7 V to 5.5 V | Supply range must cover the system rail; slight differences affect compatibility with 5 V and low-voltage designs. |
| Package | TSSOP-16 | TSSOP-16 | Identical package footprint allows direct PCB substitution without layout changes. |
| Internal oscillator | Yes (on-chip) | Yes (on-chip) | An internal oscillator simplifies design by eliminating external clock components, though both parts share this benefit. |
| Operating temperature range | -40 °C to +85 °C | -40 °C to +85 °C | Industrial temperature range ensures reliable operation across harsh environments; matching ranges confirm equivalent robustness. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1230IPWR | ADS1222IPWRG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 20 | 24 |
| Sampling Rate(Per Second) | 80 | 240 |
| Number of Inputs | 1 | 2 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | SPI |
| Configuration | PGA-ADC | MUX-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.3V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.3V | 2.7V ~ 5.5V |
| Features | PGA | Temperature Sensor |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the primary functional differences between the ADS1230IPWR and ADS1222IPWRG4?
The ADS1230IPWR is a 20-bit delta-sigma analog-to-digital converter (ADC) designed specifically for weigh-scale and bridge-sensor applications, featuring a low-noise programmable gain amplifier (PGA) with gains of 1, 2, 64, and 128. The ADS1222IPWRG4 is a 24-bit delta-sigma ADC with a 2-channel differential input multiplexer and a fixed gain of 1, intended for general-purpose low-frequency measurement applications. The ADS1230 integrates a dedicated PGA optimized for bridge sensors, while the ADS1222 provides higher resolution (24-bit) and input multiplexing but lacks an integrated PGA.
Are the ADS1230IPWR and ADS1222IPWRG4 pin-compatible and package-compatible?
Both devices are offered in a 16-pin TSSOP package (PW suffix), but they are not pin-compatible. The ADS1230IPWR and ADS1222IPWRG4 have different pin functions and internal architectures, so they cannot be dropped into the same PCB footprint without design changes. Always verify pin assignments against the respective manufacturer datasheets before considering any substitution.
What are the resolution and data rate specifications for each device?
The ADS1230IPWR provides 20-bit resolution with a selectable output data rate of 10 SPS or 80 SPS. The ADS1222IPWRG4 provides 24-bit resolution with a programmable output data rate typically ranging from 2.5 SPS to 240 SPS depending on configuration. The ADS1222 offers higher resolution and a wider data-rate range, while the ADS1230 is optimized for low-noise weigh-scale signal chains at fixed rates.
Which device is better suited for weigh-scale or bridge-sensor applications?
The ADS1230IPWR is specifically designed for weigh-scale and bridge-sensor applications, integrating a low-noise PGA with selectable gains of 1, 2, 64, and 128 to directly interface with bridge outputs. The ADS1222IPWRG4 has a fixed gain of 1 and no integrated PGA, so external amplification would be required for low-level bridge signals. For direct bridge-sensor interfacing, the ADS1230IPWR is the more appropriate choice based on its documented architecture.
Do both devices support the same supply voltage range?
Both the ADS1230IPWR and ADS1222IPWRG4 operate from a single analog supply in the 2.7 V to 5.5 V range, with a separate digital supply also specified in the datasheets. Designers should confirm the exact recommended operating conditions, including digital I/O supply levels, from the respective manufacturer datasheets before finalizing a design.
What digital interface do these ADCs use?
Both the ADS1230IPWR and ADS1222IPWRG4 use a serial peripheral interface (SPI-compatible) for communication with a host microcontroller. The ADS1230 provides a simple two-wire data-ready and data-clock interface, while the ADS1222 offers a more flexible serial interface with additional control registers. The exact timing and protocol details should be verified in each device's datasheet.
Can the ADS1222IPWRG4 directly replace the ADS1230IPWR in an existing design?
No. Although both are 16-pin TSSOP delta-sigma ADCs, they differ in resolution (24-bit vs 20-bit), input architecture (multiplexed 2-channel vs single-channel with PGA), gain configuration, and register/control structure. A direct replacement would require PCB, firmware, and signal-chain redesign, and must be validated against both manufacturer datasheets.