Part A
ADS1254E
Texas Instruments
- Lifecycle
- Active
- Stock
- 4308 PCS
- Package
- SSOP-20
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS1254E and ADS1213E/1KG4 are both 24-bit delta-sigma analog-to-digital converters from Texas Instruments, sharing a comparable resolution class and similar serial interface architecture. However, they differ in channel configuration, package footprint, and sample rate capability, so the ADS1213E/1KG4 can serve as a functional substitute for the ADS1254E only after the system design is validated against these differences.
Resolution and Architecture
Validation required
Channel Count
Not compatible
Package Type
Not compatible
Sample Rate
Validation required
Parts at a glance
Part B
ADS1213E/1KG4
Texas Instruments
- Lifecycle
- Active
- Stock
- 8128 PCS
- Package
- SSOP-28
- 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 | ADS1254E | ADS1213E/1KG4 | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 22 | Higher resolution provides finer measurement granularity and lower quantization noise, which directly affects achievable accuracy in precision sensing applications. |
| Number of Input Channels | 4 (differential) | 4 (differential) | Channel count determines how many sensor signals can be digitized without external multiplexing; both offer 4 differential inputs, so channel capacity is equivalent. |
| Maximum Sample Rate (SPS) | 19.2k | 6.25k | Sample rate sets the maximum signal bandwidth that can be captured; a faster rate enables monitoring of higher-frequency or fast-changing signals. |
| Interface Type | SPI (serial) | SPI (serial) | The digital interface must match the host microcontroller; both use SPI, so firmware and bus wiring are largely compatible. |
| Supply Voltage (V) | 5 | 5 | Supply voltage must match the system power rail; identical 5 V operation allows drop-in power compatibility. |
| Package Type | SSOP-20 | SOIC-20 (wide) | Package footprint and pin pitch affect PCB layout and assembly; differing packages may require board redesign for substitution. |
| Internal PGA Gain | 1 to 64 | 1 to 128 | Programmable gain amplifies small sensor signals before conversion; a wider gain range supports lower-level inputs without external amplification. |
| Operating Temperature Range (°C) | -40 to +85 | -40 to +85 | Temperature range defines environmental robustness; identical industrial ranges mean equivalent suitability for harsh environments. |
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 | ADS1254E | ADS1213E/1KG4 |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Discontinued at Digi-Key |
| Number of Bits | 24 | 22 |
| Sampling Rate(Per Second) | 20k | 6.25k |
| Number of Inputs | 4 | 4 |
| Input Type | Differential | Differential |
| Data Interface | SPI | SPI |
| Configuration | MUX-ADC | MUX-PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External, Internal |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 1.8V ~ 3.6V | 5V |
| Features | - | PGA |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the primary differences between the ADS1254E and the ADS1213E/1KG4?
The ADS1254E is a 24-bit, 4-channel delta-sigma ADC with a maximum data rate of 20 kSPS, while the ADS1213E/1KG4 is a 22-bit, 4-channel delta-sigma ADC with a maximum data rate of 6.25 kSPS. The ADS1254E offers higher resolution and faster throughput, whereas the ADS1213E/1KG4 provides lower speed with 22-bit resolution.
Are the ADS1254E and ADS1213E/1KG4 pin-compatible?
No. The ADS1254E is supplied in a 20-pin SSOP package, and the ADS1213E/1KG4 is supplied in a 24-pin SSOP package. The different pin counts and pin functions prevent direct pin-to-pin substitution without PCB redesign.
What are the maximum data rates of the ADS1254E and ADS1213E/1KG4?
The ADS1254E supports a maximum data rate of 20 kSPS. The ADS1213E/1KG4 supports a maximum data rate of 6.25 kSPS. The ADS1254E is therefore better suited for higher-speed signal acquisition.
How do the resolutions of the ADS1254E and ADS1213E/1KG4 compare?
The ADS1254E provides 24-bit resolution, while the ADS1213E/1KG4 provides 22-bit resolution. The ADS1254E offers higher nominal resolution, which can benefit low-level signal measurement applications.
Do both the ADS1254E and ADS1213E/1KG4 support multiple input channels?
Yes. Both devices provide 4 input channels. The ADS1254E offers 4 differential inputs, and the ADS1213E/1KG4 provides 4 channels that can be configured as differential or single-ended inputs depending on the device configuration.
What supply voltage ranges do the ADS1254E and ADS1213E/1KG4 require?
The ADS1254E operates from a single 5 V analog supply with a 2.7 V to 3.6 V digital supply. The ADS1213E/1KG4 operates from a single 5 V supply. Designers should verify the exact supply and reference requirements in the respective manufacturer datasheets before layout.
Can the ADS1254E directly replace the ADS1213E/1KG4 in an existing design?
No. The devices differ in package pin count, resolution, maximum data rate, and supply architecture. A direct replacement is not possible without validating schematic, layout, firmware timing, and reference requirements against the manufacturer datasheets.