Overview
The ADS8556IPMR, produced by Texas Instruments, is a high-performance, 16-bit, six-channel simultaneous-sampling analog-to-digital converter (ADC). This device is part of the ADS855x family, which includes pin- and software-compatible ADCs with 16-, 14-, and 12-bit resolutions. The ADS8556IPMR features six successive approximation register (SAR) based ADCs, each with true bipolar inputs and a sample-and-hold circuit, enabling simultaneous high-speed multi-channel signal acquisition.
The device operates over a wide industrial temperature range of –40°C to 125°C and is packaged in a 64-pin LQFP (10x10 mm) package. It supports both parallel and serial interface modes, with data rates up to 630 kSPS in parallel mode and 450 kSPS in serial mode.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16-bit | |
| Number of Channels | 6 | |
| Maximum Data Rate (Internal Clock and Reference) | 630 kSPS (PAR), 450 kSPS (SER) | kSPS |
| Maximum Data Rate (External Clock and Reference) | 800 kSPS (PAR), 530 kSPS (SER) | kSPS |
| Input Voltage Range | Up to ±12 V | V |
| Signal-to-Noise Ratio (SNR) | 91.5 dB | dB |
| Internal Reference Voltage Range | 0.5 V to 2.5 V and 0.5 V to 3.0 V | V |
| Operating Temperature Range | –40°C to 125°C | °C |
| Supply Voltage (AVDD to AGND) | 4.5 V to 5.5 V | V |
| Package Type | LQFP-64 | |
| Package Size | 10.00 mm × 10.00 mm | mm |
Key Features
- Family of 16-, 14-, and 12-bit, pin- and software-compatible ADCs
- Six SAR ADCs grouped in three pairs for simultaneous sampling
- Pin-selectable or programmable input voltage ranges up to ±12 V
- Excellent signal-to-noise performance with an SNR of 91.5 dB
- Programmable and buffered internal reference voltage (0.5 V to 2.5 V and 0.5 V to 3.0 V)
- Comprehensive power-down modes: Deep Power-Down, Partial Power-Down, and Auto-Nap Power-Down
- Selectable parallel or serial interface with configurable bus width
- Operating temperature range of –40°C to 125°C
Applications
- Power Quality Measurement
- Protection Relays
- Multi-Axis Motor Control
- Programmable Logic Controllers
- Industrial Data Acquisition
Q & A
- What is the resolution of the ADS8556IPMR ADC?
The ADS8556IPMR has a resolution of 16 bits.
- How many channels does the ADS8556IPMR support?
The device supports six channels.
- What are the maximum data rates for the ADS8556IPMR?
The maximum data rates are 630 kSPS in parallel mode and 450 kSPS in serial mode using internal clock and reference.
- What is the input voltage range for the ADS8556IPMR?
The input voltage range is up to ±12 V.
- What is the signal-to-noise ratio (SNR) of the ADS8556IPMR?
The SNR is 91.5 dB.
- What are the power-down modes available in the ADS8556IPMR?
The device supports Deep Power-Down, Partial Power-Down, and Auto-Nap Power-Down modes.
- What are the interface options for the ADS8556IPMR?
The device supports both parallel and serial interfaces with configurable bus widths.
- What is the operating temperature range of the ADS8556IPMR?
The operating temperature range is –40°C to 125°C.
- What is the package type and size of the ADS8556IPMR?
The device is packaged in a 64-pin LQFP package with a size of 10.00 mm × 10.00 mm.
- What are some typical applications of the ADS8556IPMR?
Typical applications include Power Quality Measurement, Protection Relays, Multi-Axis Motor Control, Programmable Logic Controllers, and Industrial Data Acquisition.
