Part A
ADS127L01IPBS
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 1330 PCS
- Package
- TQFP-32
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Not a drop-in replacement
The ADS124S06IPBS and ADS127L01IPBS are both 24-bit delta-sigma ADCs in a TQFP-32 package, but they differ fundamentally in resolution architecture, sample rate, channel count, and interface configuration. The ADS127L01IPBS offers a single wide-bandwidth channel with significantly higher output data rates, while the ADS124S06IPBS provides a six-channel multiplexed low-speed input structure. These differences in signal chain topology, throughput, and digital interface make direct substitution impractical without redesign of the surrounding circuitry and firmware.
Different channel count
Different data rate
Different digital interface
Different input architecture
Parts at a glance
Part B
ADS124S06IPBS
Texas Dụng cụ
- Lifecycle
- Active
- Stock
- 2820 PCS
- Package
- TQFP-32
- Series
- Data Acquisition - Analog to Digital Converters (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 | ADS124S06IPBS | ADS127L01IPBS | Why it matters |
|---|---|---|---|
| Resolution (bits) | 24 | 24 | Both are 24-bit delta-sigma ADCs, so nominal resolution is equivalent for high-precision sensing. |
| Number of input channels | 6 (single-ended) / 3 (differential) | 2 (differential) | Channel count determines how many sensors can be multiplexed into one converter; the ADS124S06 supports more inputs. |
| Maximum sample rate | 4 kSPS | 512 kSPS | Sample rate sets the achievable signal bandwidth; the ADS127L01 is far faster for wideband or high-throughput acquisition. |
| Input type / PGA | Integrated PGA (gain 1 to 128) | No integrated PGA (fixed gain buffer) | An integrated PGA allows direct connection of small-signal sensors without external amplification, simplifying the analog front end. |
| Interface | SPI | SPI | Both use SPI, so the digital host interface is compatible for drop-in communication. |
| Supply voltage (analog) | 2.7 V to 5.25 V (AVDD) | 2.7 V to 3.6 V (AVDD) | The wider analog supply range of the ADS124S06 allows 5 V operation for larger input spans, while the ADS127L01 is limited to 3.6 V. |
| Package | 32-pin TQFP (PBS) | 32-pin TQFP (PBS) | Identical package and pin count enable the same PCB footprint, easing layout substitution. |
| Operating temperature range | -40 °C to +125 °C | -40 °C to +125 °C | Equivalent industrial temperature range supports use in the same harsh environments. |
| Typical application focus | Low-speed precision sensor measurement (RTD, thermocouple, bridge) | High-speed wideband precision data acquisition | The two parts target different signal bandwidths, so substitutability depends on whether the application needs low-speed precision or high-speed sampling. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS127L01IPBS | ADS124S06IPBS |
|---|---|---|
| Part Status | Active | Active |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 512k | 4k |
| Number of Inputs | 1 | 6 |
| Input Type | Differential | Single Ended |
| Data Interface | SPI | SPI |
| Configuration | ADC | MUX-PGA-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External, Internal |
| Voltage - Supply, Analog | 2.7V ~ 3.6V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 1.7V ~ 3.6V | 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 125°C | -50°C ~ 125°C |
| Ratio - S / H: ADC | - | 0:1 |
| Features | - | PGA |
Frequently asked questions
What are the primary functional differences between the ADS124S06IPBS and ADS127L01IPBS?
The ADS124S06IPBS is a 24-bit, 4-kSPS delta-sigma ADC with an integrated programmable gain amplifier (PGA), voltage reference, and sensor excitation current sources, optimized for precision sensor measurement. The ADS127L01IPBS is a 24-bit, 512-kSPS wide-bandwidth delta-sigma ADC designed for high-speed data acquisition with a flat passband and low latency. The ADS124S06 integrates more analog front-end functionality, while the ADS127L01 prioritizes higher sampling rate and wider signal bandwidth.
Do the ADS124S06IPBS and ADS127L01IPBS share the same package and pinout?
Both devices are offered in a TQFP-32 (PBS) package, but they are not pin-to-pin compatible. Pin functions and assignments differ between the two products, so PCB layouts must be designed specifically for each device and cannot be interchanged without redesign.
How do the maximum sampling rates of the ADS124S06IPBS and ADS127L01IPBS compare?
The ADS124S06IPBS supports data rates up to 4 kSPS, while the ADS127L01IPBS supports data rates up to 512 kSPS. The ADS127L01 is therefore suited to higher-speed acquisition, whereas the ADS124S06 targets lower-speed, high-precision sensor applications.
Does the ADS124S06IPBS include an integrated PGA and reference, and does the ADS127L01IPBS?
The ADS124S06IPBS integrates a programmable gain amplifier (PGA) and an on-chip voltage reference, along with excitation current sources for direct sensor interfacing. The ADS127L01IPBS does not integrate a PGA; it is a wide-bandwidth ADC intended for use with external signal conditioning and an external reference.
What are the typical application targets for each device?
The ADS124S06IPBS is typically used in precision sensor measurement such as temperature, pressure, and strain-gauge systems, where integrated PGA, reference, and excitation sources simplify the analog front end. The ADS127L01IPBS is typically used in high-speed data acquisition, vibration and acoustic measurement, and test equipment where wider bandwidth and higher sample rates are required.
Can the ADS124S06IPBS and ADS127L01IPBS be used interchangeably in an existing design?
No. Despite sharing a TQFP-32 package, the two devices differ in pin functions, integrated features, maximum data rate, and digital interface behavior. A direct substitution is not supported; any replacement requires schematic, layout, and firmware validation against the respective manufacturer datasheets.
How do the digital interfaces of the ADS124S06IPBS and ADS127L01IPBS differ?
The ADS124S06IPBS provides an SPI-compatible serial interface for configuration and data readout. The ADS127L01IPBS provides a frame-sync serial interface with a dedicated data-ready signal and supports daisy-chaining for multi-channel systems. The interface protocols are not identical, so host firmware must be adapted accordingly.