Overview
The ADS8555SPMR is a 16-bit, six-channel, simultaneous-sampling analog-to-digital converter (ADC) produced by Texas Instruments. This device features six low-power, successive approximation register (SAR)-based ADCs with true bipolar inputs, each equipped with a sample-and-hold circuit. This configuration allows for simultaneous high-speed multi-channel signal acquisition, making it suitable for various industrial and data acquisition applications. The ADS8555SPMR operates over an extended industrial temperature range of –40°C to 125°C and is packaged in a 64-pin LQFP (PM) package.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Number of Channels | Six |
| Sampling Rate (Internal Clock and Reference) | Up to 630 kSPS (Parallel), up to 450 kSPS (Serial) |
| Sampling Rate (External Clock and Reference) | Up to 800 kSPS (Parallel), up to 500 kSPS (Serial) |
| Input Voltage Range | Pin-selectable or programmable up to ±12 V |
| Signal-to-Noise Ratio (SNR) | 91.5 dB |
| Total Harmonic Distortion (THD) | –94 dB |
| Internal Reference Range | 0.5 V to 2.5 V and 0.5 V to 3 V |
| Operating Temperature Range | –40°C to 125°C |
| Package Type | LQFP-64 |
Key Features
- Six SAR ADCs grouped in three pairs
- Simultaneous sampling capability
- Pin-selectable or programmable input voltage ranges up to ±12 V
- Excellent AC performance: 91.5-dB SNR, –94-dB THD
- Programmable and buffered internal reference: 0.5 V to 2.5 V and 0.5 V to 3 V
- Comprehensive power-down modes: Deep Power Down (Standby Mode), Auto-Nap Power Down
- Selectable parallel or serial interface
- Operating temperature range: –40°C to 125°C
Applications
- Power Quality Measurements
- Protection Relays
- Multi-Axis Motor Controls
- Programmable Logic Controllers
- Industrial Data Acquisition
Q & A
- What is the resolution of the ADS8555SPMR?
The ADS8555SPMR has a resolution of 16 bits.
- How many channels does the ADS8555SPMR have?
The ADS8555SPMR has six channels.
- What are the maximum sampling rates for the ADS8555SPMR?
The maximum sampling rates are up to 630 kSPS in parallel mode and up to 450 kSPS in serial mode with internal clock and reference. With external clock and reference, the rates are up to 800 kSPS in parallel mode and up to 500 kSPS in serial mode.
- What is the input voltage range of the ADS8555SPMR?
The input voltage range is pin-selectable or programmable up to ±12 V.
- What are the power-down modes available in the ADS8555SPMR?
The available power-down modes include Deep Power Down (Standby Mode) and Auto-Nap Power Down.
- What is the operating temperature range of the ADS8555SPMR?
The operating temperature range is –40°C to 125°C.
- What package type is the ADS8555SPMR available in?
The ADS8555SPMR is available in an LQFP-64 package.
- What are some common applications of the ADS8555SPMR?
Common applications include Power Quality Measurements, Protection Relays, Multi-Axis Motor Controls, Programmable Logic Controllers, and Industrial Data Acquisition.
- Can the ADS8555SPMR be used in industrial environments?
- Does the ADS8555SPMR support both parallel and serial interfaces?
