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ADS131E08SPAG

IC AFE 24BIT 64-TQFP

Part Number: ADS131E08SPAG

Manufacturer: Texas Instruments

Category: Analog Front End (AFE)

Package: 64-TQFP

Datasheet:: ADS131E08SPAG.pdf

Description: IC AFE 24BIT 64-TQFP

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PRODUCT INFORMATION

Product Details

PRODUCT TECHNICAL REFERENCE

ADS131E08SPAG Eight-Channel, 24-Bit, Analog Front-End with Fast Power-Up Time

A comprehensive technical overview of the ADS131E08SPAG, an eight-channel, simultaneous-sampling, 24-bit delta-sigma analog-to-digital converter from Texas Instruments. Covers device function, core features, electrical specifications, 64-pin TQFP package, pin configuration, typical applications, and replacement selection guidance.

Texas Instruments 64-Pin TQFP (PAG) 2.7V to 5.25V Analog / 1.7V to 3.6V Digital

Device Classification Eight-Channel 24-Bit Delta-Sigma ADC with PGA

Part Number: ADS131E08SPAG

Mounting Type: Surface Mount

Operating Temperature Range: -40°C to +105°C

PRODUCT OVERVIEW

What Is the ADS131E08SPAG?

ADS131E08SPAG is a multichannel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) from Texas Instruments with built-in programmable gain amplifiers (PGAs), an internal reference, and an internal oscillator.[reference:0] The device features eight differential simultaneous-sampling inputs and offers high performance with a dynamic range of 118 dB at 1 kSPS.[reference:1]

The ADS131E08SPAG is designed for industrial power monitoring, control, and protection applications. The wide dynamic range, scalable data rates (1 to 64 kSPS), and internal fault detect monitors make this device very attractive for circuit breakers, protection relays, and power monitoring systems.[reference:2] The fast power-up time allows data to be available within 3 ms of power being applied to the device for line-powered power applications.[reference:3][reference:4]

True high-impedance inputs enable the ADS131E08SPAG to directly interface with a resistor-divider network or a voltage transformer to measure line voltage, or a current transformer or Rogowski coil to measure line current.[reference:5] With high integration levels and exceptional performance, the device enables the creation of scalable industrial power systems at a significantly reduced size, power, and overall cost.[reference:6]

Eight-Channel Simultaneous Sampling 8 differential inputs with simultaneous sampling for accurate multi-phase power monitoring.

High Performance 118 dB dynamic range, –125 dB crosstalk, and –100 dB THD at 50 Hz and 60 Hz.[reference:7]

Fast Power-Up 3 ms power-up time enables rapid data availability for line-powered applications.[reference:8]

DEVICE HIGHLIGHTS

Key Features and Benefits of ADS131E08SPAG

Eight-Channel Simultaneous Sampling

Eight differential simultaneously sampled inputs provide accurate phase and magnitude measurements for three-phase power monitoring and protection systems.[reference:9]

High Dynamic Range & Low Power

118 dB dynamic range at 1 kSPS with only 2 mW per channel power consumption, enabling high-performance, energy-efficient designs.[reference:10]

Flexible Gain & Data Rates

Programmable gain options: 1, 2, 4, 8, and 12. Data rates from 1 to 64 kSPS provide flexibility for various application requirements.[reference:11]

Wide Supply Voltage Range

Analog supply: 2.7 V to 5.25 V (unipolar) or ±2.5 V (bipolar). Digital supply: 1.7 V to 3.6 V.[reference:12]

Integrated Fault Detection

Fault detection with integrated comparators and DAC-controlled trigger levels. Device self-testing capability ensures system reliability.[reference:13]

High Integration & Package

Internal reference (8 ppm/°C drift), internal oscillator, four GPIOs, and SPI-compatible interface in a 64-pin TQFP package.[reference:14]

REFERENCE DATA

Technical Specifications for ADS131E08SPAG

Part Number	ADS131E08SPAG	Manufacturer	Texas Instruments
Device Type	Eight-Channel 24-Bit Delta-Sigma ADC with PGA	Number of Inputs	8 Differential (Simultaneous Sampling)
Resolution	24 Bits	Data Rates	1, 2, 4, 8, 16, 32, 64 kSPS
Analog Supply (AVDD)	2.7 V to 5.25 V	Analog Supply (Bipolar)	±2.5 V
Digital Supply (DVDD)	1.7 V to 3.6 V	PGA Gain Options	1, 2, 4, 8, 12
Dynamic Range	118 dB @ 1 kSPS	Crosstalk	–125 dB
THD	–100 dB @ 50 Hz/60 Hz	Internal Reference Drift	8 ppm/°C
Power Consumption	2 mW/channel	Power-Up Time	3 ms
Package	64-Pin TQFP (PAG)	Package Body Size	10.00 mm × 10.00 mm
Mounting Type	Surface Mount	Operating Temperature	-40°C to +105°C
Interface	SPI-Compatible	GPIOs	4
RoHS	Yes	MSL Rating	Level-3-260C-168 HR
Device Marking	ADS131E08S	Lead Finish	NiPdAu

Electrical values shown above are reference values. Test conditions, limits, and guaranteed performance should always be confirmed from the current official manufacturer datasheet before design or production use.

DESIGN REFERENCE

Circuit Considerations for ADS131E08SPAG

Configuration & Interface

The ADS131E08SPAG is configured via an SPI-compatible serial interface:

Data Rates: Programmable from 1 to 64 kSPS
PGA Gain: Selectable gain settings: 1, 2, 4, 8, and 12
Internal Reference: 2.4 V or 4 V output with 8 ppm/°C drift
Fault Detection: Integrated comparators with DAC-controlled trigger levels
Input MUX: Individual input multiplexer per channel for test, temperature, and fault detection

PCB and Power-Supply Guidance

ADC performance depends on layout, bypassing, and power supply design:

Decouple each AVDD pin to AVSS with a 1-µF capacitor
Decouple AVDD1 to AVSS1 with a 1-µF capacitor
Connect a 330-nF capacitor from VREFP to VREFN
Connect a 270-nF capacitor from VREFN to AVSS
Use unipolar (2.7 V to 5.25 V) or bipolar (±2.5 V) analog supplies
Connect any unused or powered-down analog input pins to AVDD
Thermal resistance θJA = 46.2°C/W (TQFP-64 package)
Verify the recommended PCB footprint from the official datasheet before production

64-PIN TQFP (PAG)

Pin Configuration Reference for ADS131E08SPAG

ADS131E08S

TQFP (PAG) TOP VIEW

Confirm package orientation and pin numbering against the official package drawing before PCB layout. The PAG package has 64 pins with 0.5mm pitch.

1 IN8N Channel 8 Negative Analog Input

2 IN8P Channel 8 Positive Analog Input

3 IN7N Channel 7 Negative Analog Input

4 IN7P Channel 7 Positive Analog Input

5 IN6N Channel 6 Negative Analog Input

6 IN6P Channel 6 Positive Analog Input

7 IN5N Channel 5 Negative Analog Input

8 IN5P Channel 5 Positive Analog Input

9 IN4N Channel 4 Negative Analog Input

10 IN4P Channel 4 Positive Analog Input

11 IN3N Channel 3 Negative Analog Input

12 IN3P Channel 3 Positive Analog Input

13 IN2N Channel 2 Negative Analog Input

14 IN2P Channel 2 Positive Analog Input

15 IN1N Channel 1 Negative Analog Input

16 IN1P Channel 1 Positive Analog Input

17 OPAMPP Internal Op Amp Non-Inverting Input

18 OPAMPN Internal Op Amp Inverting Input

19 OPAMPOUT Internal Op Amp Output

20 AVSS Analog Ground

21 AVSS Analog Ground

22 AVDD Analog Supply

23 AVSS Analog Ground

24 VREFP Positive Reference Voltage Output

25 VREFN Negative Reference Voltage Input

26 VCAP4 Filter Capacitor Connection

27 NC No Connect

28 VCAP1 Filter Capacitor Connection

29 NC No Connect

30 VCAP2 Filter Capacitor Connection

31 RESV1 Reserved - Connect to AVSS

32 AVSS Analog Ground

33 PWDN Power-Down Input (Active LOW)

34 RESET Reset Input (Active LOW)

35 CS Chip Select (Active LOW)

36 DRDY Data Ready Output

37 DGND Digital Ground

38 DIN Serial Data Input

39 DOUT Serial Data Output

40 SCLK Serial Clock Input

41 START Start Conversion Input

42 DAISY_IN Daisy-Chain Input

43 GPIO1 General-Purpose I/O

44 GPIO2 General-Purpose I/O

45 GPIO3 General-Purpose I/O

46 GPIO4 General-Purpose I/O

47 DVDD Digital Supply

48 DVDD Digital Supply

49 DGND Digital Ground

50 CLKSEL Clock Source Select

51 AVSS1 Charge Pump Analog Ground

52 AVDD1 Charge Pump Analog Supply

53 VCAP3 Filter Capacitor Connection

54 AVDD Analog Supply

55 AVDD Analog Supply

56 AVSS Analog Ground

57 AVDD Analog Supply

58 AVDD Analog Supply

59 AVSS Analog Ground

60 TESTP Test Pin - Connect to AVSS

61 TESTN Test Pin - Connect to AVSS

62 NC No Connect

63 NC No Connect

64 NC No Connect

APPLICATION AREAS

Typical Applications for ADS131E08SPAG

Three-Phase Power Monitoring

Simultaneous sampling of voltage and current for accurate power measurement in industrial and utility applications.

Protection Relays & Circuit Breakers

High-performance ADC with fault detection for overcurrent and overvoltage protection systems.

Industrial Power Applications

Circuit breakers, protection relays, and power monitoring in industrial environments.

Data Acquisition Systems

Multichannel simultaneous sampling for precision data acquisition and control systems.

Test & Measurement Equipment

High-resolution, low-noise ADC for precision measurement instrumentation.

Energy Metering

Accurate voltage and current measurement for revenue-grade energy metering applications.

REPLACEMENT GUIDANCE

Selecting an Alternative for ADS131E08SPAG

A replacement for the ADS131E08SPAG should not be selected only by product category. The electrical characteristics, package, and pin configuration must be evaluated against the actual circuit requirements.

Number of inputs (8 differential, simultaneous)

Resolution (24-bit)

Data rates (1–64 kSPS)

Dynamic range (118 dB @ 1 kSPS)

Power-up time (3 ms)

PGA gain options (1, 2, 4, 8, 12)

Package (64-pin TQFP)

Operating temperature range (–40°C to +105°C)

Family alternatives: ADS131E08SPAGR (tape and reel, 1,500 units), ADS131E08 (standard version, 128 ms power-up time, internal/external reference), ADS131E06 (6-channel, 24-bit), ADS131E04 (4-channel, 24-bit), ADS130E08 (16-bit, 8-channel). The ADS131E08S (SPAG/SPAGR) offers the fastest power-up time (3 ms) and internal reference only. Select based on channel count, power-up time, reference requirements, and packaging needs.

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MANUFACTURER INFORMATION

Texas Instruments

The ADS131E08S (ADS131E08SPAG) belongs to the precision delta-sigma ADC portfolio of Texas Instruments. The family is designed for industrial power monitoring, control, and protection applications where high performance, low power, and fast power-up time are critical.

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Haishengye Electronics provides electronic component stock supply, BOM sourcing, quotation support, and quality inspection services for ADS131E08SPAG and related devices.

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Technical Information Disclaimer

This technical guide is provided for product identification and preliminary reference only. Electrical limits, package dimensions, pin configuration, product status, and application suitability must be verified using current official manufacturer documentation before design, procurement, or production.

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Specifications

Product Attribute: Attribute Value

Part Number: ADS131E08SPAG

Manufacturer: Texas Instruments

Package: 64-TQFP

package: 64-TQFP

Series: -

Packaging: Tray

Product Status: Active

Number of Bits: 24

Number of Channels: 8

Power (Watts): 17.6 mW

Voltage - Supply, Analog: 2.7V ~ 5.25V

Voltage - Supply, Digital: 1.8V ~ 3.6V

Mounting Type: Surface Mount

Grade: -

Qualification: -

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ADS131E08SPAG Procurement and Technical Support

ADS131E08SPAG is manufactured by Texas Instruments. This page provides purchasing information including manufacturer, category, package, datasheet, stock reference, price reference and product specifications.

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Part Number: ADS131E08SPAG

Manufacturer: Texas Instruments

Package: 64-TQFP

Category: Analog Front End (AFE)

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