Part A
ADS8588SIPMR
Texas Instruments
- Lifecycle
- Active
- Stock
- 4137 Stückzahl
- Package
- LQFP-64
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The ADS8548SPMR is a viable functional replacement candidate for the ADS8588SIPMR, sharing the same 16-bit SAR architecture, 8-channel simultaneous-sampling configuration, and TQFP-64 footprint. Designers should validate the reduced 500 kSPS throughput and the narrower bipolar input range against system timing and signal-chain requirements before committing to the substitution.
Resolution and Architecture
High match
Channel Count and Sampling
High match
Maximum Throughput
Validation required
Analog Input Range
Validation required
Parts at a glance
Part B
ADS8548SPMR
National Semiconductor
- Lifecycle
- Active
- Stock
- 6339 Stückzahl
- Package
- LQFP-64
- Series
- Datenerfassung mit 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 | ADS8588SIPMR | ADS8548SPMR | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 14 bit | Higher resolution provides finer measurement granularity and lower quantization error, which directly affects accuracy of the digitized signal. |
| Number of Input Channels | 8 | 8 | Channel count determines how many analog signals can be sampled by a single device; matching counts supports direct functional substitution. |
| Sampling Rate (Max) | 500 kSPS | 500 kSPS | Maximum throughput must meet the system's signal bandwidth requirements; equal rates allow drop-in replacement without timing redesign. |
| Input Type | Single-ended | Single-ended | Single-ended versus differential input architecture affects signal conditioning circuitry and noise immunity in the analog front end. |
| Supply Voltage (Analog) | 5 V | 5 V | Analog supply voltage must match the system rail to avoid level-shifting and to preserve specified input range and performance. |
| Interface | Parallel / SPI | Parallel / SPI | Digital interface compatibility determines whether the device can connect to the existing host controller without glue logic or firmware changes. |
| Package | LQFP-64 | LQFP-64 | Package and pinout must match for board-level interchangeability; identical packages simplify layout reuse. |
| Operating Temperature Range | -40 to 125 °C | -40 to 125 °C | Temperature range must cover the application environment to ensure reliable operation and specified performance over the full range. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADS8588SIPMR | ADS8548SPMR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Active |
| Number of Bits | 16 | 14 |
| Sampling Rate(Per Second) | 200k | 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 | 8 | 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 |
Frequently asked questions
What are the key differences between the ADS8588SIPMR and the ADS8548SPMR?
The ADS8588SIPMR is an 8-channel, 16-bit, 500 kSPS simultaneous-sampling SAR ADC, while the ADS8548SPMR is an 8-channel, 14-bit, 500 kSPS simultaneous-sampling SAR ADC. Both share the same 64-pin LQFP (PM) package and parallel/serial interface family, but the ADS8588S provides 16-bit resolution versus 14-bit on the ADS8548S.
Are the ADS8588SIPMR and ADS8548SPMR pin-to-pin compatible?
Yes. Both devices are offered in the same 64-pin LQFP (PM) package and belong to the same ADS8588S/ADS8548S pin-compatible family, with matching pin functions for the analog inputs, reference, supply, and digital interface pins.
Do both ADCs support simultaneous sampling of all eight channels?
Yes. Both the ADS8588SIPMR and ADS8548SPMR integrate eight sample-and-hold circuits and eight ADCs that sample all channels simultaneously, which preserves phase information across channels for motor control, power monitoring, and multi-axis sensing applications.
What is the maximum throughput of each device?
Both the ADS8588SIPMR and ADS8548SPMR support a maximum throughput of 500 kSPS per channel, with all eight channels sampled simultaneously at that rate.
What analog input ranges do these ADCs support?
Both devices support software-selectable bipolar input ranges of ±10 V and ±5 V, as well as unipolar ranges of 0 V to 10 V and 0 V to 5 V, allowing direct connection to industrial signal levels without external signal conditioning.
What digital interfaces are available on the ADS8588SIPMR and ADS8548SPMR?
Both devices provide a flexible parallel interface (byte or word mode) and a serial interface compatible with SPI, QSPI, and daisy-chain configurations, enabling connection to a wide range of host processors and FPGAs.
What are the typical applications for these simultaneous-sampling ADCs?
Both the ADS8588SIPMR and ADS8548SPMR are intended for industrial applications such as motor control, power quality and protection relays, multi-phase power monitoring, and data acquisition systems that require simultaneous sampling of multiple high-voltage analog channels.
Can the ADS8548SPMR be used as a drop-in replacement for the ADS8588SIPMR?
Because both devices are pin-compatible and share the same package, supply, reference, and interface architecture, the ADS8548SPMR can be considered for designs that can accept 14-bit instead of 16-bit resolution. The resolution difference must be validated against the system's accuracy and dynamic-range requirements before substitution.