Overview
The ADS8555SPM is a high-performance, 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 design enables simultaneous high-speed multi-channel signal acquisition, making it ideal for various industrial and measurement applications.
Key Specifications
| Parameter | Value |
|---|---|
| Resolution | 16 bits |
| Number of Channels | Six |
| Data Rate (Internal Clock and Reference) | Up to 630 kSPS (Parallel), up to 450 kSPS (Serial) |
| Data 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
- Maximum data rates of up to 630 kSPS in parallel mode and up to 450 kSPS in serial mode with internal clock and reference
- Maximum data rates of up to 800 kSPS in parallel mode and up to 500 kSPS in serial mode with external clock and reference
- Pin-selectable or programmable input voltage ranges up to ±12 V
- Excellent AC performance with 91.5-dB SNR and –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 including Deep Power Down (Standby Mode) and Auto-Nap Power Down
- Selectable parallel or serial interface
Applications
- Power Quality Measurements
- Protection Relays
- Multi-Axis Motor Controls
- Programmable Logic Controllers
- Industrial Data Acquisition
Q & A
- What is the resolution of the ADS8555SPM ADC?
The ADS8555SPM has a resolution of 16 bits.
- How many channels does the ADS8555SPM have?
The ADS8555SPM has six channels.
- What are the maximum data rates for the ADS8555SPM with an internal clock and reference?
The maximum data rates are up to 630 kSPS in parallel mode and up to 450 kSPS in serial mode.
- What are the maximum data rates for the ADS8555SPM with an external clock and reference?
The maximum data 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 ADS8555SPM?
The input voltage range is pin-selectable or programmable up to ±12 V.
- What is the operating temperature range of the ADS8555SPM?
The operating temperature range is –40°C to 125°C.
- What package type is the ADS8555SPM available in?
The ADS8555SPM is available in an LQFP-64 package.
- Does the ADS8555SPM support simultaneous sampling?
- What are some of the power-down modes available on the ADS8555SPM?
The ADS8555SPM has comprehensive power-down modes including Deep Power Down (Standby Mode) and Auto-Nap Power Down.
- Can the interface of the ADS8555SPM be configured?
