Part A
ADS1263IPW
德州儀器
- Lifecycle
- Active
- Stock
- 4618 件
- Package
- TSSOP-28
- Series
- 資料獲取-模數轉換器（ADC）
Replacement verdict
Not a drop-in replacement
The ADS1263IPW and ADS1232IPWG4 are both precision delta-sigma ADCs, but they differ fundamentally in resolution, channel architecture, interface, and package, so the ADS1263IPW cannot serve as a direct drop-in substitute for the ADS1232IPWG4 without redesign and firmware changes.
Different resolution and architecture
Different channel count
Different digital interface
Different package and footprint
Parts at a glance
Part B
ADS1232IPWG4
德州儀器
- Lifecycle
- Active
- Stock
- 3840 件
- Package
- TSSOP-24
- Series
- 資料獲取-模數轉換器（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 | ADS1263IPW | ADS1232IPWG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 32 | 24 | Higher resolution enables finer measurement of small signal changes, which is critical for precision sensor and weigh-scale applications. |
| Number of input channels | 10 (5 differential / 10 single-ended) | 2 differential | More channels allow multiplexing of multiple sensors on a single device, reducing component count and board space. |
| Maximum sample rate | 38.4 kSPS | 80 SPS | A higher sample rate supports faster-changing signals and higher-throughput acquisition systems. |
| Interface type | SPI | SPI | Both use SPI, so the host microcontroller interface is compatible, but firmware register maps differ. |
| Integrated PGA gain range | 1 to 32 V/V | 1 to 128 V/V | The PGA gain range determines the smallest input signal that can be amplified to full scale, affecting low-level sensor sensitivity. |
| Integrated features | PGA, 2 IDACs, 2 sensor excitation current sources, internal oscillator, reference monitor, 24-bit auxiliary ADC | PGA, on-chip oscillator, temperature sensor | Extra integrated blocks such as IDACs and an auxiliary ADC reduce external circuitry and simplify sensor biasing. |
| Supply voltage range | 2.7 V to 5.25 V (analog and digital) | 2.7 V to 5.3 V (analog and digital) | Compatible supply ranges allow both parts to operate from common 3.3 V or 5 V rails, easing power design. |
| Package | 28-pin TSSOP | 24-pin TSSOP | Different pin counts and footprints mean the PCB layout must be redesigned; the parts are not drop-in replacements. |
| Operating temperature range | -40 °C to +125 °C | -40 °C to +105 °C | A wider temperature range supports harsher industrial environments and provides more thermal margin. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1263IPW | ADS1232IPWG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 32 | 24 |
| Sampling Rate(Per Second) | 38k | 80 |
| Number of Inputs | 5, 10 | 2 |
| Input Type | Differential, Single Ended | Differential, Single Ended |
| Data Interface | SPI | SPI |
| Configuration | MUX-PGA-ADC | MUX-PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External, Internal | External |
| Voltage - Supply, Analog | 5V | 2.7V ~ 5.3V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.7V ~ 5.3V |
| Features | PGA, Temperature Sensor | PGA |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 105°C |
Frequently asked questions
What are the key architectural differences between the ADS1263IPW and ADS1232IPWG4?
The ADS1263IPW is a 32-bit, 38-kSPS delta-sigma ADC with an integrated PGA, dual sensor excitation current sources, and a 24-bit auxiliary ADC. The ADS1232IPWG4 is a 24-bit, 80-SPS delta-sigma ADC with an integrated low-noise PGA and dual-channel differential input, optimized for weigh-scale and bridge sensor applications. The ADS1263 offers higher resolution, faster output data rates, and more integrated features, while the ADS1232 focuses on low-speed, low-noise precision measurement.
Are the ADS1263IPW and ADS1232IPWG4 pin-to-pin compatible?
No. The ADS1263IPW is supplied in a 28-pin TSSOP package, while the ADS1232IPWG4 is supplied in a 24-pin TSSOP package. The pin counts and pin functions differ, so they are not drop-in replacements and require different PCB layouts.
Which device offers a higher maximum output data rate?
The ADS1263IPW supports output data rates up to 38 kSPS in its main ADC path, whereas the ADS1232IPWG4 provides a maximum output data rate of 80 SPS. The ADS1263 is therefore better suited for applications requiring faster signal acquisition.
How do the input channel configurations compare?
The ADS1263IPW provides 5 differential or 10 single-ended inputs on its main ADC, plus a separate 24-bit auxiliary ADC with additional inputs. The ADS1232IPWG4 provides two differential input channels (AIN1 and AIN2) with a multiplexer. The ADS1263 offers greater channel count and flexibility for multi-sensor systems.
Do both devices include an integrated PGA, and how do their gains compare?
Yes, both integrate a low-noise PGA. The ADS1263IPW PGA supports gains of 1 to 32 V/V on the main ADC. The ADS1232IPWG4 PGA supports gains of 1, 2, 64, and 128 V/V. The gain selections differ, so signal-chain design must be recalculated when comparing or substituting these devices.
Which device is more appropriate for precision weigh-scale or bridge sensor designs?
The ADS1232IPWG4 is specifically optimized for weigh-scale and bridge sensor applications, offering low-noise 24-bit conversion at 10 SPS or 80 SPS with gains of 64 or 128 for direct bridge excitation sensing. The ADS1263IPW can also be used in such designs but provides higher speed, higher resolution, and more integrated features, making it suitable for more complex or higher-throughput precision systems.
How do the supply voltage requirements differ between the two devices?
The ADS1263IPW operates from an analog supply of 5 V (4.75 V to 5.25 V) and a digital supply of 2.7 V to 5.25 V. The ADS1232IPWG4 operates from a single supply of 2.7 V to 5.3 V. Designers must verify supply rail compatibility when comparing or migrating between these parts.
Can the ADS1232IPWG4 be used as a direct substitute for the ADS1263IPW in an existing design?
No. Differences in package pinout, resolution, output data rate, PGA gain options, channel count, and supply requirements mean the ADS1232IPWG4 is not a direct substitute for the ADS1263IPW. Any substitution requires a full review of the schematic, PCB layout, and firmware against the respective manufacturer datasheets.