AD9281 Series

Dual Channel 8-Bit Resolution CMOS ADC

Catalog

Dual Channel 8-Bit Resolution CMOS ADC

Part	Features	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case [custom]	Package / Case	Package / Case [custom]	Supplier Device Package	Sampling Rate (Per Second)	Input Type	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Number of A/D Converters	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Ratio - S/H:ADC	Reference Type	Architecture	Data Interface	Number of Bits	Configuration	Number of Inputs
Analog Devices AD9281ARSZ	Simultaneous Sampling	Surface Mount	85 °C	-40 °C	0.209 in	28-SSOP	5.3 mm	28-SSOP	28 M	Differential Single Ended	5.5 V	2.7 V	2	2.7 V	5.5 V	1:1	External Internal	Pipelined	Parallel	8	S/H-ADC	2
Analog Devices AD9281ARS	Simultaneous Sampling	Surface Mount	85 °C	-40 °C	0.209 in	28-SSOP	5.3 mm	28-SSOP	28 M	Differential Single Ended	5.5 V	2.7 V	2	2.7 V	5.5 V	1:1	External Internal	Pipelined	Parallel	8	S/H-ADC	2

Catalog

Dual Channel 8-Bit Resolution CMOS ADC

Key Features

• Complete Dual Matching ADC

• Low Power Dissipation:225 mW (+3 V Supply)

• Single Supply: 2.7 V to 5.5 V

• Differential Nonlinearity Error: 0.1 LSB

• On-Chip Analog Input Buffers

• Signal-to-Noise Ratio: 49.2 dB

• Over Seven Effective Bits

• Spurious-Free Dynamic Range: –65 dB

• No Missing Codes Guaranteed

• 28-Lead SSOP

• On-Chip Reference

Description

The AD9281 is a complete dual channel, 28 MSPS, 8-bit CMOS ADC. The AD9281 is optimized specifically for applications where close matching between two ADCs is required (e.g., I/Q channels in communications applications). The 28 MHz sampling rate and wide input bandwidth will cover both narrow-band and spread-spectrum channels. The AD9281 integrates two 8-bit, 28 MSPS ADCs, two input buffer amplifiers, an internal voltage reference and multiplexed digital output buffers.