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ADS1271IPWG4 Equivalent & Substitute Parts
Part Overview
The ADS1271IPWG4 is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Texas Instruments, designed for single-channel differential input data acquisition applications. This device features a 105 kSPS sampling rate, external reference configuration, and operates across industrial temperature ranges from -40°C to 105°C. The ADS1271IPWG4 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resolution (Bits) | 24 |
| Sampling Rate | 105 kSPS |
| Number of Inputs | 1 |
| Input Type | Differential |
| Data Interface | SPI |
| Architecture | Sigma-Delta |
| Reference Type | External |
| Analog Supply Voltage | 5V |
| Digital Supply Voltage | 1.65V ~ 3.6V |
| Operating Temperature | -40°C ~ 105°C |
| Package Type | 16-TSSOP |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 2 (1 Year) |
Substitute Part Grouping Explanation
Substitution eligibility for the ADS1271IPWG4 is determined by strict equivalence across the following critical parameters: 24-bit resolution, 105 kSPS sampling rate, single differential input channel, SPI digital interface, Sigma-Delta architecture, external reference configuration, 5V analog supply, 1.65V–3.6V digital supply range, industrial temperature range (-40°C to 105°C), and 16-TSSOP surface-mount package. All identified substitutes maintain identical electrical specifications and mechanical compatibility. Packaging format variations (tube versus other configurations) do not affect functional equivalence but may impact procurement and handling procedures.
Parameter Comparison
| Parameter | ADS1271IPWG4 | ADS1271IPW | ADS1271IBPW |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution (Bits) | 24 | 24 | 24 |
| Sampling Rate (kSPS) | 105 | 105 | 105 |
| Number of Inputs | 1 | 1 | 1 |
| Input Type | Differential | Differential | Differential |
| Data Interface | SPI | SPI | SPI |
| Architecture | Sigma-Delta | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External | External |
| Analog Supply (V) | 5 | 5 | 5 |
| Digital Supply (V) | 1.65–3.6 | 1.65–3.6 | 1.65–3.6 |
| Operating Temperature (°C) | -40 to 105 | -40 to 105 | -40 to 105 |
| Package / Case | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Product Status | Discontinued | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL Rating | 2 (1 Year) | 2 (1 Year) | 2 (1 Year) |
Engineering Selection Recommendations
The ADS1271IPW is the manufacturer-recommended substitute, currently in active production status with substantial inventory availability (19,872 units). This part maintains complete electrical and mechanical equivalence to the discontinued ADS1271IPWG4 and is the primary selection for new designs and production continuity.
The ADS1271IBPW serves as a parametric equivalent alternative, also in active production with confirmed inventory (1,900 units). This part provides identical functional specifications and is suitable for applications where the primary substitute is unavailable.
Both substitutes carry ROHS3 compliance and identical MSL ratings, ensuring compatibility with current manufacturing and environmental standards. Selection between ADS1271IPW and ADS1271IBPW should be based on procurement availability, lead time, and packaging format requirements (tube packaging for both).
Frequently Asked Questions (FAQ)
Q: Can ADS1271IPW and ADS1271IBPW be used interchangeably with ADS1271IPWG4?
A: Yes. Both substitutes maintain identical electrical specifications, pin configurations, package dimensions (16-TSSOP), and operating parameters. Direct substitution is supported without circuit modification.
Q: What is the difference between ADS1271IPW and ADS1271IBPW?
A: Both parts are functionally equivalent. The primary differences are inventory levels and potential procurement lead times. ADS1271IPW has higher stock availability. Both are packaged in tubes and meet identical compliance standards.
Q: Why is the ADS1271IPWG4 discontinued?
A: Product discontinuation is a manufacturer decision. The active substitutes (ADS1271IPW and ADS1271IBPW) provide continued access to this 24-bit ADC architecture without functional compromise.
Q: Are there any thermal or reliability differences between these parts?
A: No. All three parts operate across the same temperature range (-40°C to 105°C) and carry identical MSL ratings (2, 1 Year), indicating equivalent thermal performance and moisture sensitivity characteristics.
Q: Can I use these substitutes in existing PCB designs without layout changes?
A: Yes. The 16-TSSOP package and pin configuration are identical across all three parts. PCB layouts require no modification for substitution.
Q: What supply voltages do these ADCs require?
A: Analog supply is fixed at 5V. Digital supply operates within 1.65V to 3.6V range, allowing flexibility in digital interface voltage selection.
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