AD9269-20EBZ

• Product introduction

AD9269-20EBZ 16-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V, dualAnalog-to-digital converters

The AD9269 is a monolithic, dual, 16-bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS analog-to-digital converter (ADC) that operates from a 1.8 V supply and contains high performance track-and-hold circuitry and an on-chip reference. It features a multistage differential pipelined architecture with built-in output error correction logic, 16-bit accuracy at 80 MSPS data rates, and guaranteed no missing codes over the entire operating temperature range.

The ADC includes features that provide optimal flexibility and minimal system cost, such as programmable clock and data alignment, and generation of programmable digital test patterns. Available digital test codes include built-in fixed and pseudo-random codes, as well as user-defined test codes input via the serial port interface (SPI). A quadrature error correction block corrects mismatches (offset voltage, gain, and phase) caused by the analog demodulator in the direct conversion receiver. A differential clock input is used to control all internal conversion cycles. An optional duty cycle stabilizer (DCS) is used to compensate for large clock duty cycle fluctuations while maintaining excellent overall ADC performance.

The digital output data is formatted as offset binary, gray code, or twos complement. Each ADC channel has a data output clock (DCO) to ensure that the receive logic has the correct latch timing. The device supports both 1.8 V and 3.3 V CMOS levels, and the output data can be multiplexed on a single output bus.

The AD9269 is available in a 64-lead LFCSP package, RoHS compliant, and is specified over the industrial temperature range of −40°C to +85°C.

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