ADI AD6644AST-65

1465M-25°C ~ 85°C

Overview

 The AD6644 is a high-speed, high-performance, monolithic 14-bit analog-to-digital converter. All necessary functions, including track-and-hold (T/H) and reference, are included onchip to provide a complete conversion solution. The AD6644 provides CMOS-compatible digital outputs. It is the third generation in a wideband ADC family, preceded by the AD9042 (12-bit 41 MSPS) and the AD6640 (12-bit 65 MSPS, IF sampling.)

 The AD6644 is also useful in single channel digital receivers designed for use in wide-channel bandwidth systems (CDMA, W-CDMA). With oversampling, harmonics can be placed outside the analysis bandwidth. Oversampling also facilitates the use of decimation receivers (such as the AD6620), allowing the noise floor in the analysis bandwidth to be reduced. By replacing traditional analog filters with predictable digital components, modern receivers can be built using fewer “RF” components, resulting in decreased manufacturing costs, higher manufacturing yields, and improved reliability. The AD6644 is built on Analog Devices’ high-speed complementary bipolar process (XFCB) and uses an innovative, multipass circuit architecture. Units are packaged in a 52-terminal LowProfile Quad Plastic Flatpack (LQFP) specified from –25°C to +85°C.

Features

Applications

• Scientific instruments
• Rotary encoder
• Displaying
• Transducer
• Microcontrollers.
• Digital Storage Oscilloscope
• Scientific instruments.
• Music reproduction technology
• Communication Systems
• Data Acquisition Systems