Part A
ADS1260BIRHBR
Texas Instruments
- Lifecycle
- Active
- Stock
- 6816 PCS
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Not a drop-in replacement
The ADS1260BIRHBR and ADS1283IRHFT are both high-resolution delta-sigma ADCs, but they differ fundamentally in resolution, input architecture, package footprint, and target application, so neither part can serve as a direct drop-in substitute for the other. The ADS1260BIRHBR offers a 32-bit, 5-channel multiplexed input in a compact 5x5 mm VQFN, while the ADS1283IRHFT delivers 31-bit resolution with a single differential input in a 5x5 mm VQFN but is optimized for seismic and energy-exploration signal chains. Designers must re-validate the analog front end, reference, and digital interface before considering any substitution.
Different resolution class
Different input architecture
Different application focus
Different digital interface
Parts at a glance
Part B
ADS1283IRHFT
Texas Instruments
- Lifecycle
- Active
- Stock
- 3422 PCS
- Package
- VFQFN-24
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | ADS1260BIRHBR | ADS1283IRHFT | Why it matters |
|---|---|---|---|
| Resolution (bits) | 32 | 31 | Higher resolution enables finer measurement of small signal changes; a 1-bit difference affects achievable noise-free resolution and dynamic range. |
| Number of input channels | 5 (4 differential / 5 single-ended) | 2 (1 differential) | Channel count determines how many sensors or signal sources can be multiplexed into a single ADC, directly affecting system architecture and BOM cost. |
| Maximum sample rate | 40 kSPS | 4 kSPS | Sample rate bounds the signal bandwidth that can be captured; a 10x difference limits suitability for higher-speed acquisition or multiplexed multi-channel scanning. |
| Input architecture / PGA | Integrated PGA with gains 1 to 32 | Integrated PGA with gains 1 to 64 | PGA gain range sets the smallest full-scale input that can be resolved, affecting direct interface to low-level sensors such as bridge or thermocouple outputs. |
| Interface | SPI | SPI | Both use SPI, so host MCU/FPGA firmware porting is straightforward, though register maps and command sets differ and require driver changes. |
| Supply voltage | Analog 5 V; digital 2.7 V to 5.25 V | Analog 5 V; digital 2.7 V to 3.6 V | Digital supply range affects compatibility with 5 V versus 3.3 V logic hosts and may require level shifting or supply rail changes. |
| Package | VQFN-40 (6 mm x 6 mm) | VQFN-24 (5 mm x 4 mm) | Different footprint and pin count mean the PCB layout cannot be shared; a redesign is required for substitution. |
| Operating temperature range | -40 °C to +125 °C | -40 °C to +85 °C | The narrower temperature range of the ADS1283 limits use in high-temperature industrial or automotive environments. |
| Typical application focus | Multi-channel precision sensor measurement (industrial, test) | Seismic and high-resolution energy exploration / vibration sensing | Target applications indicate differences in noise spectral density, filter options, and synchronization features that affect functional substitutability. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS1260BIRHBR | ADS1283IRHFT |
|---|---|---|
| Supplier | - | Texas Instruments |
| Part Status | Active | Active |
| Number of Bits | 24 | 31 |
| Sampling Rate(Per Second) | - | 128k |
| Number of Inputs | 5 | 2 |
| Input Type | Differential, Single Ended | Differential |
| Data Interface | SPI | SPI |
| Configuration | MUX-PGA-ADC | MUX-PGA-ADC |
| Ratio - S / H: ADC | - | 0:1 |
| Number of A/D Converters | - | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External, Internal | External |
| Voltage - Supply, Analog | 4.75V ~ 5.25V | 2.15V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 1.65V ~ 3.6V |
| Features | PGA | PGA |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
| Base Product Number | ADS1260 | - |
| Sampling Rate (Per Second) | 40k | - |
| Number of A / D Converters | 1 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Cut Tape (CT), Tape & Reel (TR) | - |
Frequently asked questions
What are the primary differences between the ADS1260BIRHBR and the ADS1283IRHFT?
The ADS1260BIRHBR is a 32-bit, 5-channel delta-sigma ADC with an integrated PGA, offering data rates up to 40 kSPS and specified for a supply range of 4.75 V to 5.25 V (analog) with a VQFN-40 package. The ADS1283IRHFT is a 32-bit, single-channel delta-sigma ADC designed for seismic and energy exploration applications, featuring a programmable gain of 1 to 64, data rates up to 4 kSPS, and a TQFP-64 package. The ADS1260B is a general-purpose multiplexed sensor ADC, while the ADS1283 is a high-resolution, low-noise single-channel converter optimized for precision seismic measurement.
Are the ADS1260BIRHBR and ADS1283IRHFT pin-to-pin or package compatible?
No. The ADS1260BIRHBR is supplied in a 40-pin VQFN package, while the ADS1283IRHFT is supplied in a 64-pin TQFP package. The pin counts, package footprints, and pin functions differ, so they are not drop-in replacements and require different PCB land patterns.
How do the input channel configurations of the ADS1260BIRHBR and ADS1283IRHFT differ?
The ADS1260BIRHBR provides a 5-channel input multiplexer (four differential or five single-ended inputs) with an integrated PGA, making it suitable for multi-sensor systems. The ADS1283IRHFT is a single-channel device with a differential input and a PGA gain range of 1 to 64, intended for a single high-precision sensor channel such as a geophone or hydrophone.
What are the maximum data rates of the ADS1260BIRHBR and ADS1283IRHFT?
The ADS1260BIRHBR supports programmable data rates up to 40 kSPS. The ADS1283IRHFT supports data rates up to 4 kSPS. The ADS1260B is therefore better suited to higher-speed multi-channel acquisition, while the ADS1283 targets lower-speed, ultra-low-noise seismic measurements.
Do both devices include an integrated programmable gain amplifier (PGA)?
Yes. The ADS1260BIRHBR includes an integrated PGA with selectable gains of 1 to 32. The ADS1283IRHFT includes an integrated PGA with selectable gains of 1 to 64. Both allow direct connection of low-level sensor signals without an external amplifier, though the available gain ranges differ.
What are the typical target applications for the ADS1260BIRHBR versus the ADS1283IRHFT?
The ADS1260BIRHBR is intended for general-purpose precision sensor measurement such as temperature, pressure, strain, and industrial process control where multiple channels and moderate speed are needed. The ADS1283IRHFT is optimized for seismic data acquisition, energy exploration, and other ultra-low-noise single-channel applications requiring high resolution at low data rates.
Can the ADS1283IRHFT be used as a direct substitute for the ADS1260BIRHBR in an existing design?
No. The two devices differ in package (64-pin TQFP vs 40-pin VQFN), channel count (single vs five), maximum data rate (4 kSPS vs 40 kSPS), PGA gain range, and register map. A direct substitution is not possible without redesigning the PCB, revalidating the signal chain, and updating firmware to match the different register interfaces.