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ADS9218

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Two-channel, simultaneous-sampling, 18-bit 10-MSPS SAR ADC with fully-differential ADC input driver

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Data sheet

ADS9218

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Product details

Resolution (Bits) 18 Sample rate (max) (ksps) 10000 Number of input channels 2 Interface type SPI, Serial Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.1 Input voltage range (min) (V) 0.7 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 360 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 95.1 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
Resolution (Bits) 18 Sample rate (max) (ksps) 10000 Number of input channels 2 Interface type SPI, Serial Architecture SAR Input type Differential Multichannel configuration Simultaneous Sampling Rating Catalog Reference mode External, Internal Input voltage range (max) (V) 4.1 Input voltage range (min) (V) 0.7 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 360 Analog supply (min) (V) 4.75 Analog supply voltage (max) (V) 5.25 SNR (dB) 95.1 Digital supply (min) (V) 1.75 Digital supply (max) (V) 1.85
VQFN (RHA) 40 36 mm² 6 x 6
  • High-speed, 10-MSPS/ch sampling rate
    • ADS9218: 10 MSPS/ch
    • ADS9217: 5 MSPS/ch
  • 2-channel, simultaneous sampling
  • Feature integration:
    • Integrated ADC driver
    • Integrated precision reference
    • Common-mode voltage output buffer
  • High-performance
    • 18-bit no missing codes
    • INL: ±1 LSB, DNL: ±0.75 LSB
    • SNR: 95 dB, THD: –115 dB at fIN = 2 kHz
  • Wide input bandwidth:
    • ADS9218: 90 MHz (–3 dB)
    • ADS9217: 45 MHz (–3 dB)
  • Low-power 180 mW/ch at 10 MSPS/ch
  • Serial LVDS interface:
    • SDR and DDR output modes
    • Synchronous clock and data output
  • Extended operating range: –40°C to +125°C
  • 6-mm × 6-mm VQFN package
  • High-speed, 10-MSPS/ch sampling rate
    • ADS9218: 10 MSPS/ch
    • ADS9217: 5 MSPS/ch
  • 2-channel, simultaneous sampling
  • Feature integration:
    • Integrated ADC driver
    • Integrated precision reference
    • Common-mode voltage output buffer
  • High-performance
    • 18-bit no missing codes
    • INL: ±1 LSB, DNL: ±0.75 LSB
    • SNR: 95 dB, THD: –115 dB at fIN = 2 kHz
  • Wide input bandwidth:
    • ADS9218: 90 MHz (–3 dB)
    • ADS9217: 45 MHz (–3 dB)
  • Low-power 180 mW/ch at 10 MSPS/ch
  • Serial LVDS interface:
    • SDR and DDR output modes
    • Synchronous clock and data output
  • Extended operating range: –40°C to +125°C
  • 6-mm × 6-mm VQFN package

The ADS921x is an 18-bit, 10-MSPS/ch, dual-channel, simultaneous-sampling, analog-to-digital converter (ADC) with an integrated driver for the ADC inputs. The ADC consumes only 180 mW/ch at 10 MSPS/ch and the power consumption scales with lower sampling rates.

The ADS921x uses a serial low-voltage differential signaling (SLVDS) data interface that enables high-speed digital interface while minimizing digital switching noise. The device comes in a space-saving, 6-mm × 6-mm, VQFN package.

The ADS921x is specified for the extended temperature range of –40°C to +125°C.

The ADS921x is an 18-bit, 10-MSPS/ch, dual-channel, simultaneous-sampling, analog-to-digital converter (ADC) with an integrated driver for the ADC inputs. The ADC consumes only 180 mW/ch at 10 MSPS/ch and the power consumption scales with lower sampling rates.

The ADS921x uses a serial low-voltage differential signaling (SLVDS) data interface that enables high-speed digital interface while minimizing digital switching noise. The device comes in a space-saving, 6-mm × 6-mm, VQFN package.

The ADS921x is specified for the extended temperature range of –40°C to +125°C.
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Technical documentation

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* Data sheet ADS921x Dual, Simultaneous Sampling, 18-Bit, 10-MSPS SAR ADC With Fully Differential ADC Input Driver datasheet PDF | HTML 30 Jan 2023
More literature Precision ADCs for Motor Encoders and Position Sensing PDF | HTML 27 Mar 2023
Application note Low Latency Signal-Chain for Measurement Unit in Digital Control Loop PDF | HTML 22 Feb 2023
Circuit design ADS9218 Power-Optimized Signal Chain Circuit PDF | HTML 21 Oct 2022
Application note Simplify Antialiasing Filters With ADS9218 PDF | HTML 21 Oct 2022
Technical article Leverage coherent sampling and FFT windows when evaluating SAR ADCs (Part 1) 13 Mar 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADS9218EVM-PDK — ADS9218 performance demonstration kit for two-channel, simultaneous-sampling, 18-bit 10-MSPS SAR ADC

The ADS9218 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the ADS9218, which is a two-channel, 18-bit, 10-MSPS (per channel) analog-to-digital converter (ADC) with a fully-differential input driver.

ADS9218EVM-PDK includes an interposer card that allows (...)

User guide: PDF | HTML
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Support software

ADS92XX-FPGA-EXAMPLE-CODE — ADS92xx FPGA interface example code

Expedite your ADS92xx digital design with this Verilog module from Texas Instruments
Supported products & hardware

Supported products & hardware

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Precision ADCs
ADS9218 — Two-channel, simultaneous-sampling, 18-bit 10-MSPS SAR ADC with fully-differential ADC input driver
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Simulation model

ADS9218 TINA-TI Reference Design

SBAM494.TSC (89 KB) - TINA-TI Reference Design
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Calculation tool

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

ADC-INPUT-CALC is an online tool that provides support for designing the input buffer to an analog-to-digital converter (ADC). It offers 24 different op-amp based buffer circuits that can be used to drive an ADC input. The available topologies cover differential, single-ended and (...)
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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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VQFN (RHA) 40 View options
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