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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Analog to Digital Converters (ADC)ADS1211E/1K
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ADS1211E/1K - Texas Instruments

Manufacturer Part Number
ADS1211E/1K
Manufacturer
Texas Instruments
Allelco Part Number
32D-ADS1211E/1K
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,346 pcs available, New & Original
Parts Description
IC ADC 24BIT SIGMA-DELTA 28SSOP
Package
28-SSOP
Data sheet
ADS1211E/1K.pdf

PCN Other

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 9346
  • Unit Price: $20.26
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $20.26 $20.26
200+ $7.84 $1,568.00
500+ $7.56 $3,780.00
1000+ $7.43 $7,430.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ADS1211E/1K Tech Specifications
Texas Instruments - ADS1211E/1K technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - ADS1211E/1K

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply, Digital 5V
Voltage - Supply, Analog 5V
Supplier Device Package 28-SSOP
Series -
Sampling Rate (Per Second) 16k
Reference Type External, Internal
Ratio - S/H:ADC -
Package / Case 28-SSOP (0.209', 5.30mm Width)
Package Tape & Reel (TR)
Operating Temperature -40°C ~ 85°C
Product Attribute Attribute Value
Number of Inputs 4
Number of Bits 24
Number of A/D Converters 1
Mounting Type Surface Mount
Input Type Differential
Features PGA
Data Interface SPI
Configuration MUX-PGA-ADC
Base Product Number ADS1211
Architecture Sigma-Delta

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

ADS1211E/1K

Manufacturer

Texas Instruments

Introduction

The ADS1211E/1K is a precision 24-bit analog to digital converter (ADC) designed for data acquisition in measurement and instrumentation applications.

Product Features and Performance

24-bit resolution

Sampling rate of 16,000 samples per second

4 differential input channels

SPI data interface

Integrated multiplexer (MUX), programmable gain amplifier (PGA), and ADC

Sigma-Delta architecture

External and internal reference voltage options

Product Advantages

High resolution and sampling rate enhance measurement accuracy.

Flexible input configuration is enabled by the differential input type.

The integration of MUX, PGA, and ADC simplifies system design and reduces component count.

Versatility in reference voltage selection to match various application needs.

Key Technical Parameters

Number of Bits: 24

Sampling Rate (Per Second): 16k

Number of Inputs: 4

Input Type: Differential

Data Interface: SPI

Voltage Supply, Analog: 5V

Voltage Supply, Digital: 5V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Robust operating temperature range from -40°C to 85°C ensuring reliability in harsh environments.

Compatibility

Compatible with SPI data interface for easy integration with microcontrollers and digital systems.

Application Areas

Industrial measurement and control systems

Data acquisition systems

Medical instrumentation

Scientific research equipment

Product Lifecycle

Status: Last Time Buy

This product is in the end-of-life phase, with recommendations to consider alternatives for new designs.

Several Key Reasons to Choose This Product

High-resolution conversion improves the precision of data acquisition.

Multi-functional integration (MUX-PGA-ADC) reduces design complexity.

Wide operating temperature range ensures performance in extreme conditions.

Last Time Buy status indicates a need for acquiring this model before discontinuation, ensuring maintenance of existing systems.

Frequently Asked Questions(FAQ)

How does the ADS1211E/1K perform in terms of noise and resolution when used in a 4-channel differential input configuration for industrial sensor measurement applications?
The ADS1211E/1K delivers a 24-bit sigma-delta architecture that provides excellent noise performance suitable for precision sensor measurements. With four differential inputs, each channel can independently sample at up to 16 kSPS while maintaining low noise floor characteristics due to its integrated programmable gain amplifier (PGA). In typical industrial environments with moderate interference, this device achieves effective resolution beyond 20 bits under proper filtering and calibration, making it viable for thermocouple, strain gauge, or RTD sensing where signal levels are low relative to full-scale range.
What is the impact of using an external reference versus the internal reference on the long-term stability and accuracy of the ADS1211E/1K in battery-powered data acquisition systems?
The ADS1211E/1K supports both internal and external voltage references. While the internal reference offers convenience and space savings, it typically exhibits higher drift over temperature and time—approximately ±5 ppm/°C—which can degrade gain and offset accuracy after several months of operation. For battery-powered systems requiring extended unattended operation, an external precision reference such as a 2.5 V or 4.096 V bandgap device significantly improves long-term stability, reducing total error budget by up to 80% compared to relying solely on the internal source.
How do the SPI interface timing requirements of the ADS1211E/1K compare to those of other 24-bit ADCs like the ADS1256IDBR when interfacing with microcontrollers lacking dedicated hardware SPI peripherals?
The ADS1211E/1K communicates via a standard SPI-compatible serial interface operating at clock frequencies up to 2.5 MHz. This allows relatively fast data transfers even on general-purpose GPIO-based SPI implementations. In contrast, the ADS1256IDBR also uses SPI but often requires more complex command sequences and has a lower maximum clock speed of around 2 MHz under typical configurations. When using bit-banged interfaces, the ADS1211E/1K generally demands less CPU overhead due to its simpler register structure and fewer preamble bytes per conversion cycle.
Can the ADS1211E/1K be safely used in automotive-grade environments without additional shielding or layout considerations, given its operating temperature range of -40°C to 85°C?
The ADS1211E/1K is rated for industrial temperature operation (-40°C to 85°C), which covers most non-automotive harsh environments but falls short of AEC-Q100 qualification required for automotive applications. While the device will function reliably within its specified thermal limits, electromagnetic compatibility (EMC) performance may degrade near switching power supplies or RF sources unless proper PCB layout practices are followed—such as grounding the analog ground plane separately, minimizing loop areas in signal paths, and placing decoupling capacitors close to power pins. Thus, while usable in some automotive auxiliary systems, it should not replace certified components in primary safety-critical circuits.
What design considerations are necessary to ensure accurate simultaneous sampling across all four channels of the ADS1211E/1K when measuring dynamic signals with rapid changes?
The ADS1211E/1K employs a multiplexed input architecture rather than true simultaneous sampling; therefore, each input is sampled sequentially. To minimize crosstalk and phase mismatch between channels during dynamic measurements, designers must implement matched trace lengths, guard rings around analog traces, and low-impedance return paths. Additionally, firmware should account for the inherent channel-to-channel delay (~62.5 μs per channel at 16 kSPS) by either buffering samples or applying software compensation if synchronization is critical. Using external sample-and-hold amplifiers is not recommended due to potential instability with the sigma-delta modulator, so instead focus on analog front-end matching and layout symmetry.
How does the programmable gain amplifier (PGA) in the ADS1211E/1K affect settling behavior and conversion latency when configured for high-gain settings such as 128x?
At maximum PGA gain of 128x, the internal filter response slows significantly, increasing the sinc filter settling time and thereby extending conversion cycles. For example, at 16 kSPS and 128x gain, only one conversion occurs every 256 clock cycles due to decimation, resulting in effective output rates dropping to ~62.5 SPS. This trade-off trades bandwidth for sensitivity—ideal for quasi-static measurements like bridge sensors but unsuitable for rapidly varying signals. Designers should select gain based on expected input amplitude to avoid unnecessary oversampling and maintain adequate update rates.
Is the ADS1211E/1K suitable for direct connection to unipolar sensor outputs such as 0–5 V pressure transducers without level-shifting circuitry?
The ADS1211E/1K accepts differential inputs referenced to AGND, with common-mode range extending from 0 V to VDD - 1.5 V when operating at 5 V supplies. This means unipolar signals spanning 0–5 V can be accommodated as long as the negative leg of the differential pair is biased appropriately—typically through a resistive divider or op-amp buffer referencing AGND. However, connecting a single-ended 0–5 V transducer directly without a virtual ground will result in incorrect common-mode rejection and possible saturation. Therefore, proper conditioning using instrumentation amplifiers or differential drivers is advised before applying signals to the ADC inputs.
How does power consumption scale with data rate and digital interface activity for the ADS1211E/1K, and what strategies reduce energy usage in portable monitoring devices?
The ADS1211E/1K consumes approximately 2.1 mA from a 5 V analog supply at full 16 kSPS throughput, with digital current increasing proportionally with SPI clock frequency. To optimize battery life, users should lower the output data rate via register configuration—reducing from 16 kSPS to 1 kSPS cuts power by nearly half—and disable unused features like the internal oscillator when using an external clock. Additionally, placing the device in standby mode between conversions reduces quiescent current to under 1 μA, enabling duty-cycled operation ideal for event-driven environmental monitoring.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments ADS1211E/1K

Product Attribute ADS1211E/1KG4 ADS1211U/1K ADS1211U/1K ADS1210U/1KG4
Part Number ADS1211E/1KG4 ADS1211U/1K ADS1211U/1K ADS1210U/1KG4
Manufacturer Texas Instruments Texas Instruments Burr Brown Texas Instruments
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Input Type - - - Differential
Voltage - Supply, Analog - 3.14V ~ 3.46V 11.4V ~ 16.5V 3V ~ 3.6V
Voltage - Supply, Digital - 1.14V ~ 1.26V 11.4V ~ 16.5V 1.65V ~ 3.6V
Number of A/D Converters - - - 2
Architecture - Current Source R-2R Pipelined
Series - - - -
Ratio - S/H:ADC - - - 1:1
Data Interface - LVDS - Parallel I²C LVDS - Parallel, Parallel
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Reference Type - External, Internal External External, Internal
Sampling Rate (Per Second) - - - 65M
Number of Bits - 16 8 14
Number of Inputs - - - 2
Features - - - Simultaneous Sampling
Mounting Type - Surface Mount Through Hole Surface Mount
Configuration - - - S/H-ADC
Base Product Number - DAC34H84 MAX500 ADS62P42

ADS1211E/1K Datasheet PDF

Download ADS1211E/1K pdf datasheets and Texas Instruments documentation for ADS1211E/1K - Texas Instruments.

HTML Datasheet
Cylindrical Battery Holders.pdf
PCN Other
2.73KHz.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Region Country Logistic Time(Day)
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Brazil 7
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New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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Texas Instruments

ADS1211E/1K

Texas Instruments
32D-ADS1211E/1K

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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