ADS8881 Series

18-Bit, 1-MSPS, 1-Ch SAR ADC with True-Differential Input, SPI Interface and Daisy-Chain

Catalog

18-Bit, 1-MSPS, 1-Ch SAR ADC with True-Differential Input, SPI Interface and Daisy-Chain

Part	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Sampling Rate (Per Second)	Data Interface	Package / Case	Ratio - S/H:ADC	Number of Inputs	Input Type	Number of A/D Converters	Mounting Type	Architecture	Configuration	Reference Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Supplier Device Package	Input Range	Utilized IC / Part	Supplied Contents	Power (Typ) @ Conditions	Package / Case [x]	Package / Case [x]
Texas Instruments ADS8881IDRCR	2.7 V	3.6 V	1 M	SPI	10-VFDFN Exposed Pad	1:1	1	Differential	1	Surface Mount	SAR	S/H-ADC	External	85 °C	-40 °C	3.6 V	2.7 V	10-VSON (3x3)
Texas Instruments ADS8881EVMV2-PDK			1 M	Serial SPI					1										±VREF	ADS8881	Board(s)	5.5 mW
Texas Instruments ADS8881IDGS	2.7 V	3.6 V	1 M	SPI	10-MSOP 10-TFSOP	1:1	1	Differential	1	Surface Mount	SAR	S/H-ADC	External	85 °C	-40 °C	3.6 V	2.7 V	10-VSSOP					3 mm	0.118 in
Texas Instruments ADS8881CDRCR	2.7 V	3.6 V	1 M	SPI	10-VFDFN Exposed Pad	1:1	1	Differential	1	Surface Mount	SAR	S/H-ADC	External	70 °C	0 °C	3.6 V	2.7 V	10-VSON (3x3)
Texas Instruments ADS8881CDGS	2.7 V	3.6 V	1 M	SPI	10-MSOP 10-TFSOP	1:1	1	Differential	1	Surface Mount	SAR	S/H-ADC	External	70 °C	0 °C	3.6 V	2.7 V	10-VSSOP					3 mm	0.118 in
Texas Instruments ADS8881CDRCT					10-VFDFN Exposed Pad					Surface Mount								10-VSON (3x3)
Texas Instruments ADS8881IDRCT					10-VFDFN Exposed Pad					Surface Mount								10-VSON (3x3)
Texas Instruments ADS8881EVM-PDK			1 M	SPI					1										±VREF	ADS8881	Board(s) Cable(s) Power Supply	5.5 mW

Catalog

18-Bit, 1-MSPS, 1-Ch SAR ADC with True-Differential Input, SPI Interface and Daisy-Chain

Key Features

• Sample Rate: 1 MHzNo Latency OutputUnipolar, True-Differential Input Range:–VREFto +VREFWide Common-Mode Voltage Range:0 V to VREFwith 90-dB CMRR (min)SPI™-Compatible Serial Interface withDaisy-Chain OptionExcellent AC and DC Performance:ADS8881C:INL: ±1 LSB (typ), ±2.0 LSB (max)DNL: ±1.0 LSB (max), 18-Bit NMCSNR: 100 dB, THD: –115 dBADS8881I:INL: ±1.5 LSB (typ), ±3.0 LSB (max)DNL: +1.5 and –1 LSB (max), 18-Bit NMCSNR: 100 dB, THD: –115 dBWide Operating Range:AVDD: 2.7 V to 3.6 VDVDD: 2.7 V to 3.6 V(Independent of AVDD)REF: 2.5 V to 5 V (Independent of AVDD)Operating Temperature:ADS8881C : 0°C to +70°CADS8881I : –40°C to +85°CLow-Power Dissipation:5.5 mW at 1 MSPS0.55 mW at 100 kSPS55 µW at 10 kSPSPower-Down Current (AVDD): 50 nAFull-Scale Step Settling to 18 Bits: 290 nsPackages: MSOP-10 and VSON-10Sample Rate: 1 MHzNo Latency OutputUnipolar, True-Differential Input Range:–VREFto +VREFWide Common-Mode Voltage Range:0 V to VREFwith 90-dB CMRR (min)SPI™-Compatible Serial Interface withDaisy-Chain OptionExcellent AC and DC Performance:ADS8881C:INL: ±1 LSB (typ), ±2.0 LSB (max)DNL: ±1.0 LSB (max), 18-Bit NMCSNR: 100 dB, THD: –115 dBADS8881I:INL: ±1.5 LSB (typ), ±3.0 LSB (max)DNL: +1.5 and –1 LSB (max), 18-Bit NMCSNR: 100 dB, THD: –115 dBWide Operating Range:AVDD: 2.7 V to 3.6 VDVDD: 2.7 V to 3.6 V(Independent of AVDD)REF: 2.5 V to 5 V (Independent of AVDD)Operating Temperature:ADS8881C : 0°C to +70°CADS8881I : –40°C to +85°CLow-Power Dissipation:5.5 mW at 1 MSPS0.55 mW at 100 kSPS55 µW at 10 kSPSPower-Down Current (AVDD): 50 nAFull-Scale Step Settling to 18 Bits: 290 nsPackages: MSOP-10 and VSON-10

Description

The ADS8881 is an 18-bit, 1-MSPS, true-differential input, analog-to-digital converter (ADC). The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD). The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. An optional busy-indicator bit makes synchronizing with the digital host easy. The device supports unipolar, true-differential analog input signals with a differential input swing of –VREFto VREF. This true-differential analog input structure allows for a common-mode voltage of any value in the range of 0 V to VREF(when both inputs are within the operating input range of –0.1 V to VREF+ 0.1 V). Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS8881 excellent for lower-speed applications. The ADS8881 is an 18-bit, 1-MSPS, true-differential input, analog-to-digital converter (ADC). The device operates with a 2.5-V to 5-V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD). The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. An optional busy-indicator bit makes synchronizing with the digital host easy. The device supports unipolar, true-differential analog input signals with a differential input swing of –VREFto VREF. This true-differential analog input structure allows for a common-mode voltage of any value in the range of 0 V to VREF(when both inputs are within the operating input range of –0.1 V to VREF+ 0.1 V). Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS8881 excellent for lower-speed applications.