Part A
ADS1230IPWR
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 7361 PCS
- Package
- TSSOP-16
- Series
- 데이터 수집 - 아날로그 변환기(ADC)
Replacement verdict
Not a drop-in replacement
The ADS1230IPWR and ADS1224IPWTG4 are both 24-bit delta-sigma ADCs, but they differ in resolution architecture, input channel configuration, package footprint, and reference/supply requirements. The ADS1224IPWTG4 is not a direct drop-in substitute for the ADS1230IPWR; any substitution requires schematic, layout, and firmware validation.
Different input channel configuration
Different package footprint
Different reference architecture
Different supply requirements
Parts at a glance
Part B
ADS1224IPWTG4
텍사스 인스트루먼트(주)
- Lifecycle
- Active
- Stock
- 4125 PCS
- Package
- TSSOP-20
- Series
- 데이터 수집 - 아날로그 변환기(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 | ADS1224IPWTG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 20 | 24 | Higher resolution provides finer measurement granularity, which is critical for low-level signal acquisition and precision sensing applications. |
| Number of input channels | 1 (differential) | 4 (differential) | More input channels allow multiplexing of multiple sensors without external switching hardware, affecting system complexity and cost. |
| Input type | Differential | Differential | Differential inputs reject common-mode noise, which is essential for accurate measurement in electrically noisy environments. |
| Data rate (SPS) | 10 or 80 | Up to 240 | The maximum sample rate determines how fast the system can capture changing signals and affects the trade-off between speed and noise performance. |
| Interface | SPI (2-wire, read-only) | SPI (4-wire) | Interface compatibility determines whether the part can drop into an existing digital bus design without firmware or hardware changes. |
| Supply voltage (V) | 2.7 to 5.3 | 2.7 to 5.5 | Supply voltage range must match the system rail; a narrower range may limit operation at higher supply voltages. |
| Package | 16-TSSOP | 20-TSSOP | Package footprint and pin count affect PCB layout and whether a direct board-level substitution is possible. |
| Internal PGA | Yes (gain 1, 2, 64, 128) | No | An internal programmable gain amplifier allows direct connection of low-level sensors without external amplification, simplifying the signal chain. |
| Operating temperature range (°C) | -40 to 85 | -40 to 85 | The temperature range must cover the application environment to ensure reliable operation and accuracy over the full operating conditions. |
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 | ADS1224IPWTG4 |
|---|---|---|
| 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 ADS1224IPWTG4?
The ADS1230IPWR is a 20-bit delta-sigma ADC designed for weigh scales and directly interfaced bridge sensors, featuring a fixed gain of 128 and a maximum data rate of 80 SPS. The ADS1224IPWTG4 is a 24-bit delta-sigma ADC with a 4-channel input multiplexer, offering programmable gain from 1 to 128 and data rates up to 120 SPS. The ADS1224IPWTG4 provides higher resolution and input flexibility, while the ADS1230IPWR is optimized for simple, low-noise bridge sensor applications.
Are the ADS1230IPWR and ADS1224IPWTG4 pin-to-pin compatible?
No. The ADS1230IPWR is supplied in a 16-pin TSSOP package, while the ADS1224IPWTG4 is supplied in a 20-pin TSSOP package. The different pin counts and pin functions prevent direct PCB drop-in replacement without layout changes.
What are the supply voltage requirements for each device?
Both devices operate from a single analog supply (AVDD) of 2.7 V to 5.5 V and a digital supply (DVDD) of 2.7 V to 5.5 V, per their respective manufacturer datasheets. The ADS1230IPWR and ADS1224IPWTG4 share this supply range, but the ADS1224IPWTG4 includes additional digital interface considerations due to its SPI-compatible serial interface.
How do the input configurations differ between the two ADCs?
The ADS1230IPWR provides a single differential input pair intended for direct connection to a bridge sensor, with a fixed gain of 128. The ADS1224IPWTG4 features a 4-channel differential input multiplexer, allowing selection among multiple input pairs, and offers programmable gain settings of 1, 2, 4, 8, 16, 32, 64, and 128. This makes the ADS1224IPWTG4 suitable for multi-sensor or multiplexed measurement systems.
What are the maximum output data rates for the ADS1230IPWR and ADS1224IPWTG4?
The ADS1230IPWR supports a maximum data rate of 80 SPS (selectable 10 SPS or 80 SPS). The ADS1224IPWTG4 supports data rates up to 120 SPS. The ADS1230IPWR is optimized for low-speed, high-resolution weigh-scale applications, while the ADS1224IPWTG4 offers a slightly higher maximum rate for general-purpose sensor digitization.
Do both devices include an internal oscillator?
Yes. Both the ADS1230IPWR and ADS1224IPWTG4 integrate an internal oscillator, eliminating the need for an external clock source in most applications. This simplifies system design and reduces external component count for both ADCs.
Which device is better suited for multi-channel sensor systems?
The ADS1224IPWTG4 is better suited for multi-channel systems because it includes a 4-channel differential input multiplexer and programmable gain amplifier. The ADS1230IPWR has a single differential input with fixed gain, making it appropriate for single-bridge-sensor designs such as weigh scales rather than multiplexed multi-sensor architectures.
What are the operating temperature ranges for these two ADCs?
Both the ADS1230IPWR and ADS1224IPWTG4 are specified for an operating temperature range of -40°C to +85°C, per their manufacturer datasheets. This industrial temperature range supports use in weigh scales, portable instrumentation, and industrial process control environments.