ADS9218
Two-channel, simultaneous-sampling, 18-bit 10-MSPS SAR ADC with fully-differential ADC input driver
ADS9218
- High-speed and low-power:
- ADS9219: 20MSPS/ch, 187mW/ch
- ADS9218: 10MSPS/ch, 146mW/ch
- ADS9217: 5MSPS/ch, 95mW/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: ±1LSB, DNL: ±0.75LSB
- SNR: 95.5dB and 104.5dB SNR with OSR = 16
- Wide input bandwidth:
- ADS9219: 135MHz (–3dB)
- ADS9218: 90MHz (–3dB)
- ADS9217: 45MHz (–3dB)
- Serial LVDS interface:
- SDR and DDR output modes
- Synchronous clock and data output
- Extended operating range: –40°C to +125°C
The ADS921x is a family of 18-bit, high-speed, dual-channel, simultaneous-sampling, analog-to-digital converters (ADCs) with an integrated driver for the ADC inputs. The integrated ADC driver simplifies the signal chain, reduces power consumption for precision applications, and supports high-frequency signals beyond 1MHz. By not requiring an external decoupling capacitor, the integrated ADC reference buffer is optimized for wide bandwidth applications.
The ADS921x uses a serial LVDS (SLVDS) data interface that enables high-speed digital communication while minimizing digital switching noise. Read the dual-channel ADC data using separate SLVDS outputs per ADC channel or one SLVDS output for both ADC channels.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | ADS921x Dual, Simultaneous-Sampling, 18-Bit, 20MSPS SAR ADC With Fully Differential ADC Input Driver datasheet (Rev. B) | PDF | HTML | 22 May 2024 |
Application brief | Precision ADCs in Servo Drives | PDF | HTML | 22 Aug 2024 | |
Application brief | Low Latency Signal-Chains for Digital Control Loops with ADS9219 (Rev. A) | PDF | HTML | 22 May 2024 | |
Technical article | 如何監控自動化測試儀和編碼器 | PDF | HTML | 14 May 2024 | |
Technical article | 자동화된 테스터 및 인코더를 모니터링하는 방법 | PDF | HTML | 14 May 2024 | |
Technical article | Higher precision ADCs to monitor automated testers and encoders | PDF | HTML | 03 May 2024 | |
Product overview | Precision ADCs for Motor Encoders and Position Sensing | PDF | HTML | 27 Mar 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 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
ADS9219EVM — ADS9219 evaluation module
ADS9227EVM — ADS9227 evaluation module
ADS92XX-FPGA-EXAMPLE-CODE — ADS92xx FPGA interface example code
Supported products & hardware
Products
Precision ADCs
ANALOG-ENGINEER-CALC — PC software 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 (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Receivers
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
VQFN (RHA) | 40 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Support & training
TI E2E™ forums with technical support from TI engineers
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