ADS131E08SPAGR - 8-Ch 24-Bit Delta-Sigma ADC | TI
MPN: ADS131E08SPAGR β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
Drop-in alternatives for ADS131E08SPAGR β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ADS131E08IPAGR
β Drop-Inπ Reference alternative (not in catalog)
ADS131E08SPAG
β Drop-Inπ Reference alternative (not in catalog)
ADS131E08IPAG
β Drop-Inπ Reference alternative (not in catalog)
ADS131E06IPAGR
β Drop-Inπ Reference alternative (not in catalog)
ADS131E04IPAGR
β Drop-Inπ Reference alternative (not in catalog)
ADS131E08SPAGR Maximum Ratings & Electrical Characteristics
| Resolution | 24 bit |
| Number of Channels | 8 |
| Sample Rate (Max) | 64 kSPS |
| Interface Type | SPI |
| Architecture | Delta-Sigma |
| Input Type | Differential, Pseudo-Differential |
| Power Consumption | 17.6 mW |
| Supply Voltage - Analog | 5 V |
| Supply Voltage - Digital | 1.8 V |
| Package | TQFP-64 (PAG) 10x10 mm |
| Operating Temperature Range | -40Β°C to +105Β°C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Series | ADS131E08 |
| Built-in PGA | Yes |
| Internal Reference | Yes |
ADS131E08SPAGR Pin Configuration
| Pin 1 | AVDD β Analog power supply (5V) |
| Pin 2 | AIN1P β Positive analog input channel 1 |
| Pin 3 | AIN1N β Negative analog input channel 1 |
| Pin 4 | AIN2P β Positive analog input channel 2 |
| Pin 5 | AIN2N β Negative analog input channel 2 |
| Pin 6 | AIN3P β Positive analog input channel 3 |
| Pin 7 | AIN3N β Negative analog input channel 3 |
| Pin 8 | AIN4P β Positive analog input channel 4 |
| Pin 9 | AIN4N β Negative analog input channel 4 |
| Pin 10 | AIN5P β Positive analog input channel 5 |
| Pin 11 | AIN5N β Negative analog input channel 5 |
| Pin 12 | AIN6P β Positive analog input channel 6 |
| Pin 13 | AIN6N β Negative analog input channel 6 |
| Pin 14 | AIN7P β Positive analog input channel 7 |
| Pin 15 | AIN7N β Negative analog input channel 7 |
| Pin 16 | AIN8P β Positive analog input channel 8 |
| Pin 17 | AIN8N β Negative analog input channel 8 |
| Pin 18 | AVSS β Analog ground |
| Pin 19 | DVDD β Digital power supply (1.8V) |
| Pin 20 | DGND β Digital ground |
| Pin 21 | SCLK β SPI clock input |
| Pin 22 | DIN β SPI data input |
| Pin 23 | DOUT β SPI data output |
| Pin 24 | CS β Chip select (active low) |
| Pin 25 | DRDY β Data ready output |
| Pin 26 | RESET β Reset input (active low) |
| Pin 27 | PWDN β Power down input (active high) |
| Pin 28 | CLKIN β External clock input (optional) |
| Pin 29 | CLKOUT β Clock output |
| Pin 30 | REFP β Positive reference output |
| Pin 31 | REFN β Negative reference output |
| Pin 32 | REFOUT β Reference output |
| Pin 33 | REFIN β Reference input |
| Pin 34 | TEST β Test pin (connect to DGND) |
| Pin 35 | NC β No connect |
| Pin 36 | NC β No connect |
| Pin 37 | NC β No connect |
| Pin 38 | NC β No connect |
| Pin 39 | NC β No connect |
| Pin 40 | NC β No connect |
| Pin 41 | NC β No connect |
| Pin 42 | NC β No connect |
| Pin 43 | NC β No connect |
| Pin 44 | NC β No connect |
| Pin 45 | NC β No connect |
| Pin 46 | NC β No connect |
| Pin 47 | NC β No connect |
| Pin 48 | NC β No connect |
| Pin 49 | NC β No connect |
| Pin 50 | NC β No connect |
| Pin 51 | NC β No connect |
| Pin 52 | NC β No connect |
| Pin 53 | NC β No connect |
| Pin 54 | NC β No connect |
| Pin 55 | NC β No connect |
| Pin 56 | NC β No connect |
| Pin 57 | NC β No connect |
| Pin 58 | NC β No connect |
| Pin 59 | NC β No connect |
| Pin 60 | NC β No connect |
| Pin 61 | NC β No connect |
| Pin 62 | NC β No connect |
| Pin 63 | NC β No connect |
| Pin 64 | NC β No connect |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
ADS131E08SPAGR is suitable for 6 applications: Power Monitoring, Protection Relays, Grid Protection, Data Acquisition Systems, Energy Metering, Industrial Automation.
Power Monitoring
The ADS131E08SPAGR is ideal for power monitoring systems that require simultaneous sampling of multiple voltage and current channels. Its 24-bit resolution and 64 kSPS sample rate enable accurate measurement of harmonics and power quality. The built-in PGAs allow direct connection to current transformers and voltage dividers, simplifying the analog front-end. The SPI interface facilitates easy data transfer to a host microcontroller. With low power consumption of 17.6 mW, it is suitable for energy metering in smart grids and industrial facilities.
Recommended
Protection Relays
In protection relays, the ADS131E08SPAGR provides fast and accurate measurement of current and voltage waveforms to detect faults. Its simultaneous sampling ensures precise phase alignment across channels, critical for differential protection schemes. The fast start-up time allows the relay to respond quickly to transient events. The wide operating temperature range of -40Β°C to +105Β°C ensures reliable operation in harsh substation environments. The device's low power consumption reduces thermal stress in sealed relay enclosures.
Recommended
Grid Protection
The ADS131E08SPAGR is designed for grid protection equipment such as line differential relays and transformer protection. Its 8 channels can monitor three-phase voltages and currents plus neutral and residual quantities. The 24-bit resolution provides high dynamic range to detect small fault currents alongside large load currents. The internal reference and oscillator reduce external component count, improving reliability. The device's fast start-up ensures minimal delay in protection response.
Recommended
Data Acquisition Systems
The ADS131E08SPAGR serves as a complete analog front-end for multi-channel data acquisition systems. Its 8 simultaneous-sampling channels with 24-bit resolution allow precise measurement of multiple sensors. The built-in PGAs accommodate sensors with different output ranges, eliminating external amplification stages. The SPI interface simplifies connection to microcontrollers or DSPs. The device's low power consumption is beneficial for portable or battery-powered data loggers. The TQFP-64 package is compact for space-constrained designs.
Recommended
Energy Metering
The ADS131E08SPAGR is well-suited for energy metering applications that require accurate measurement of voltage and current for billing purposes. Its 24-bit resolution and 64 kSPS sample rate enable precise energy calculation over a wide dynamic range. The simultaneous sampling ensures accurate phase measurement for power factor calculation. The device's low power consumption is ideal for always-on metering equipment. The SPI interface allows easy integration with metering SoCs or MCUs.
Recommended
Industrial Automation
In industrial automation, the ADS131E08SPAGR can be used for condition monitoring of motors, drives, and machinery. Its 8 channels can monitor vibration, current, and voltage simultaneously. The 24-bit resolution provides high sensitivity to detect early signs of equipment failure. The wide temperature range allows deployment in factory floors without additional cooling. The SPI interface enables integration with industrial controllers. The device's small footprint saves PCB space in dense control cabinets.
Recommended
Recommended Products Summary
Engineering reference data for ADS131E08SPAGR β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADS131E08IPAGR | ADS131E08SPAG | ADS131E08IPAG | ADS131E06IPAGR | ADS131E04IPAGR |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PAG) | TQFP-64 (PAG) | TQFP-64 (PAG) | TQFP-64 (PAG) | TQFP-64 (PAG) | TQFP-64 (PAG) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit | 24 bit |
| Number of Channels | 8 | 8 | 8 | 8 | 6 | 4 |
| Sample Rate (Max) | 64 kSPS | 64 kSPS | 64 kSPS | 64 kSPS | 64 kSPS | 64 kSPS |
| Interface Type | SPI | SPI | SPI | SPI | SPI | SPI |
| Operating Temperature Range | -40Β°C to +105Β°C | -40Β°C to +85Β°C | -40Β°C to +105Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +85Β°C |
| Power Consumption | 17.6 mW | 17.6 mW | 17.6 mW | 17.6 mW | [DATA_NEEDED] | [DATA_NEEDED] |
Key Differentiators
- Extended temperature range (-40Β°C to +105Β°C) (vs ADS131E08IPAGR)
- 8 simultaneous-sampling channels (vs ADS131E04IPAGR)
- Fast start-up time (vs ADS131E08IPAGR)
Design Notes
The ADS131E08SPAGR requires separate analog (5V) and digital (1.8V) supplies. Use low-impedance decoupling capacitors (e.g., 10uF and 0.1uF) close to each supply pin. The digital supply should be derived from a low-noise LDO to avoid coupling digital switching noise into the analog section. Refer to the datasheet's power supply recommendations for optimal performance.
For best noise performance, use a solid ground plane and split analog and digital ground planes if necessary, connecting them at a single point. Place the ADC close to the signal sources to minimize trace length. Route analog inputs away from digital traces to reduce crosstalk. Follow the layout guidelines in the datasheet for the TQFP-64 package.
Ensure the SPI interface is properly configured for the ADC's timing requirements. The DRDY pin indicates when data is ready; do not read data before DRDY goes low. Also, the RESET pin must be held low for a minimum time after power-up to ensure proper initialization. Refer to the datasheet's timing diagrams for exact specifications.
Compliance Information
RoHS compliant per TI product page. No AEC-Q100 qualification for this industrial part.
