ADS9218 Series

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

Catalog

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

Part	Architecture	Data Interface	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Configuration	Reference Type	Number of A/D Converters	Ratio - S/H:ADC	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Number of Inputs	Sampling Rate (Per Second)	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Input Type	Supplier Device Package
Texas Instruments ADS9218RHAR	SAR	LVDS - Parallel SPI	1.75 V	1.85 V	ADC	External Internal	2	0:2	Surface Mount	125 °C	-40 °C	40-VFQFN Exposed Pad	2	10 M	1.75 V 4.75 V	1.85 V 5.25 V	Differential	40-VQFN (6x6)

Catalog

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

Key Features

• High-speed and low-power:ADS9219: 20MSPS/ch, 187mW/chADS9218: 10MSPS/ch, 146mW/chADS9217: 5MSPS/ch, 95mW/ch2-channel, simultaneous samplingFeature integration:Integrated ADC driverIntegrated precision referenceCommon-mode voltage output bufferHigh performance:18-bit no-missing-codesINL: ±1LSB, DNL: ±0.75LSBSNR: 95.5dB and 104.5dB SNR with OSR = 16Wide input bandwidth:ADS9219: 135MHz (–3dB)ADS9218: 90MHz (–3dB)ADS9217: 45MHz (–3dB)Serial LVDS interface:SDR and DDR output modesSynchronous clock and data outputExtended operating range: –40°C to +125°CHigh-speed and low-power:ADS9219: 20MSPS/ch, 187mW/chADS9218: 10MSPS/ch, 146mW/chADS9217: 5MSPS/ch, 95mW/ch2-channel, simultaneous samplingFeature integration:Integrated ADC driverIntegrated precision referenceCommon-mode voltage output bufferHigh performance:18-bit no-missing-codesINL: ±1LSB, DNL: ±0.75LSBSNR: 95.5dB and 104.5dB SNR with OSR = 16Wide input bandwidth:ADS9219: 135MHz (–3dB)ADS9218: 90MHz (–3dB)ADS9217: 45MHz (–3dB)Serial LVDS interface:SDR and DDR output modesSynchronous clock and data outputExtended operating range: –40°C to +125°C

Description

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. 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.