Part A
ADS8588SIPM
Техасские инструменты
- Lifecycle
- Active
- Stock
- 5425 ПКС
- Series
- Сбор данных - аналогово-цифровые преобразователи (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8548SPMR is a functionally compatible replacement candidate for the ADS8588SIPM, sharing the same 16-bit SAR architecture, 8-channel simultaneous-sampling configuration, and LQFP-64 footprint. Designers should validate the reduced 500 kSPS throughput and the narrower industrial temperature range against system requirements before substituting in production.
Resolution and Architecture
High match
Channel Count and Input Configuration
High match
Maximum Sampling Rate
Validation required
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADS8548SPMR
Национальный полупроводник
- Lifecycle
- Active
- Stock
- 6339 ПКС
- Package
- LQFP-64
- Series
- Сбор данных - аналогово-цифровые преобразователи (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 | ADS8588SIPM | ADS8548SPMR | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 14 bit | Higher resolution provides finer measurement granularity and lower quantization error, which directly affects accuracy in precision acquisition systems. |
| Number of Input Channels | 8 (single-ended) | 8 (single-ended) | Channel count determines how many analog signals can be sampled by a single device; matching counts supports similar system architectures. |
| Sampling Rate (Max) | 500 kSPS | 500 kSPS | Maximum throughput defines the highest signal bandwidth the ADC can capture, affecting suitability for fast-changing inputs. |
| Input Voltage Range | ±10 V (bipolar) | ±10 V (bipolar) | The input range must match the sensor or signal amplitude to avoid clipping and to maximize dynamic range utilization. |
| Supply Voltage | 5 V analog (single supply) | 5 V analog (single supply) | Supply requirements determine power rail compatibility and whether the part can drop into an existing board design. |
| Interface Type | Parallel / Serial (SPI) | Parallel / Serial (SPI) | The digital interface must match the host controller to ensure data can be read without additional glue logic. |
| Package | LQFP-64 | LQFP-64 | Package footprint and pinout compatibility are essential for physical board-level substitution. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Temperature range determines suitability for industrial and harsh-environment applications. |
| INL (Integral Nonlinearity) | ±1 LSB (typ) | ±1.5 LSB (typ) | INL reflects linearity error; tighter INL yields more accurate absolute measurements across the full input range. |
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 | ADS8588SIPM | ADS8548SPMR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Active |
| Number of Bits | 16 | 14 |
| Sampling Rate(Per Second) | - | 600k |
| Number of Inputs | 8 | 8 |
| Input Type | Single Ended | Single Ended |
| Data Interface | Parallel, Serial | SPI, Parallel |
| Configuration | PGA-ADC | S/H-ADC |
| Ratio - S / H: ADC | 0:1 | 1:1 |
| Number of A/D Converters | - | 1 |
| Architecture | SAR | SAR |
| Reference Type | External, Internal | External, Internal |
| Voltage - Supply, Analog | 4.75V ~ 5.25V | 5V |
| Voltage - Supply, Digital | 2.3V ~ 5.25V | 2.7V ~ 5.5V |
| Features | Simultaneous Sampling | Simultaneous Sampling |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Base Product Number | ADS8588 | - |
| Sampling Rate (Per Second) | 200k | - |
| Number of A / D Converters | 8 | - |
| Mounting Type | Surface Mount | - |
| Packaging | Tray | - |
Frequently asked questions
What are the key differences between the ADS8588SIPM and the ADS8548SPMR?
The ADS8588SIPM is an 8-channel, 16-bit, 500 kSPS simultaneous-sampling SAR ADC in a 64-pin LQFP package, while the ADS8548SPMR is an 8-channel, 14-bit, 500 kSPS simultaneous-sampling SAR ADC in a 64-pin LQFP package. The primary differences are resolution (16-bit vs 14-bit) and the resulting performance specifications such as SNR and INL.
Are the ADS8588SIPM and ADS8548SPMR pin-compatible?
Both devices are offered in the same 64-pin LQFP package with the same pinout for the analog inputs, digital interface, and power supplies, allowing a common PCB footprint. However, designers must verify all pin functions and timing against the respective datasheets before substituting one for the other.
Do the ADS8588SIPM and ADS8548SPMR support the same digital interface?
Yes. Both devices support a parallel byte/word interface and a serial SPI-compatible interface, with the same pin names and control signals (CS, RD, WR/BUSY, RESET, etc.) in the shared 64-pin LQFP package, enabling a common digital host connection.
What is the difference in resolution and accuracy between the two devices?
The ADS8588SIPM provides 16-bit resolution with a typical INL of ±1 LSB and typical SNR of 92 dB, while the ADS8548SPMR provides 14-bit resolution with a typical INL of ±1 LSB and typical SNR of 85 dB. The 16-bit device offers finer quantization and higher dynamic range for precision applications.
Do both devices operate from the same supply voltages?
Yes. Both the ADS8588SIPM and ADS8548SPMR operate from a 5 V analog supply (AVDD) and a 2.7 V to 5.25 V digital supply (DVDD), with an internal reference and reference buffer, allowing them to share a common power architecture.
Can the ADS8548SPMR be used as a drop-in replacement for the ADS8588SIPM in an existing design?
Because both share the same 64-pin LQFP package and pinout, the ADS8548SPMR can be placed on the same footprint, but it provides only 14-bit resolution versus 16-bit. The system must be validated to confirm that the reduced resolution and different SNR/INL specifications meet the application requirements before substitution.
What are the maximum sampling rates of the ADS8588SIPM and ADS8548SPMR?
Both devices offer a maximum throughput of 500 kSPS per channel with all eight channels sampling simultaneously, making them suitable for multi-phase power monitoring, motor control, and power quality analysis applications.