Part A
ADS1274IPAPT
Texas Instruments
- Lifecycle
- Active
- Stock
- 4734 PCS
- Package
- HTQFP-64
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS1274IPAPT and ADS1274IPAPTG4 are functionally equivalent, sharing identical core architecture, package, and performance characteristics. The G4 suffix denotes a lead-free/RoHS-compliant variant of the same device, making the two part numbers interchangeable in most designs with no functional or footprint impact.
Resolution and Architecture
High match
Package and Pinout
High match
Supply Voltage and Interface
High match
Environmental Compliance
Validation required
Parts at a glance
Part B
ADS1274IPAPTG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8114 PCS
- Package
- TQFP-64
- 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 | ADS1274IPAPT | ADS1274IPAPTG4 | Why it matters |
|---|---|---|---|
| Resolution | 24 bit | 24 bit | Determines the maximum dynamic range and precision of the digitized signal; both parts offer identical conversion resolution. |
| Number of Channels | 4 | 4 | Defines how many analog inputs can be sampled simultaneously; identical channel count ensures the same system-level signal acquisition capability. |
| Sampling Rate (Max) | 144 kSPS | 144 kSPS | Sets the maximum bandwidth of signals that can be captured; matching rates confirm equivalent throughput for the target application. |
| Architecture | Delta-Sigma | Delta-Sigma | The converter architecture affects noise shaping, filtering, and latency; identical architecture ensures the same signal-chain behavior. |
| Supply Voltage (Analog) | 5 V | 5 V | Determines the analog input range and interface levels; matching analog supply allows direct board-level substitution. |
| Supply Voltage (Digital) | 1.8 V to 3.3 V | 1.8 V to 3.3 V | Sets the logic interface levels to the host controller; identical digital supply range ensures compatible I/O signaling. |
| Interface Type | SPI / Serial | SPI / Serial | Defines how the ADC communicates with the host processor; matching interface guarantees firmware and pin-level compatibility. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Specifies the environmental envelope for reliable operation; identical ranges confirm suitability for the same industrial applications. |
| Package / Mounting | HTQFP-64 / Surface Mount | HTQFP-64 / Surface Mount | Determines PCB footprint and assembly process; identical package and mounting allow drop-in replacement on the same board. |
| Packaging / Ordering Suffix | Tape & Reel (standard) | Tape & Reel (G4 green/RoHS variant) | The G4 suffix denotes a green/RoHS-compliant ordering variant; this affects compliance documentation and procurement but not electrical function. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1274IPAPT | ADS1274IPAPTG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 144k | 144k |
| Number of Inputs | 4 | 4 |
| Input Type | Differential | Differential |
| Data Interface | SPI | SPI |
| Configuration | ADC | ADC |
| Number of A/D Converters | 4 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 1.65V ~ 1.95V | 1.65V ~ 1.95V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the difference between ADS1274IPAPT and ADS1274IPAPTG4?
The ADS1274IPAPT and ADS1274IPAPTG4 are functionally identical quad-channel, 24-bit delta-sigma analog-to-digital converters from Texas Instruments. The "G4" suffix denotes a lead-free (RoHS-compliant) green molding compound qualification per TI's environmental classification. Both are supplied in the same 64-pin TQFP (PAP) package and share identical electrical specifications. The difference is limited to the environmental/quality classification marking, not device performance.
Are the ADS1274IPAPT and ADS1274IPAPTG4 pin-compatible and footprint-compatible?
Yes. Both devices use the same 64-pin TQFP (PAP) package with identical pin assignments and PCB land patterns, so they are drop-in compatible from a mechanical and footprint standpoint.
Do both parts share the same electrical specifications?
Yes. Both are specified as 24-bit, 4-channel simultaneous-sampling delta-sigma ADCs with data rates up to 144 kSPS in High-Speed mode, and they share the same datasheet limits for resolution, channel count, supply requirements, and interface timing. The G4 designation does not alter the electrical performance specifications.
What does the "G4" suffix indicate on the ADS1274IPAPTG4?
The G4 suffix is Texas Instruments' environmental/quality designator indicating the device is qualified as lead-free and RoHS-compliant with green molding compound. It is an environmental classification, not a functional or performance variant.
Can ADS1274IPAPT and ADS1274IPAPTG4 be used interchangeably in a design?
Yes, from a functional and footprint perspective they are interchangeable because they share the same package, pinout, and electrical specifications. Selection between them is typically driven by the purchaser's RoHS/lead-free compliance requirements and inventory availability rather than by design differences.
What are the key shared specifications of the ADS1274 family devices?
Both parts are 24-bit, 4-channel simultaneous-sampling delta-sigma ADCs offering data rates up to 144 kSPS, with selectable operating modes (High-Speed, High-Resolution, Low-Power, Low-Speed) and a serial interface, housed in a 64-pin TQFP package. Designers should confirm exact limits against the current TI datasheet for the specific orderable part number.
Which part should be selected for a RoHS-compliant design?
The ADS1274IPAPTG4 carries the G4 environmental designation indicating lead-free and RoHS-compliant construction. For designs requiring documented RoHS/lead-free compliance, the G4 variant is the appropriate selection; verify current compliance documentation from Texas Instruments for the specific orderable part.