1. General description
The ADC0808S is a differential, high-speed, 8-bit Analog-to-Digital Converter (ADC)
optimized for telecommunication transmission control systems and tape drive
applications. It allows signal sampling frequencies up to 250 MHz.
The ADC0808S clock inputs are selectable between 1.8 V Complementary Metal Oxide
Semiconductor (CMOS) or Low-Voltage Differential Signals (LVDS). The data output
signal levels are 1.8 V CMOS.
All static digital inputs (CLKSEL, CCSSEL, CE_N, OTC, DEL0 and DEL1) are 1.8 V
CMOS compatible.
The ADC0808S offers the most flexible acquisition control system possible due to its
programmable Complete Conversion Signal (CCS) which allows the delay time of the
acquisition clock and acquisition clock frequency to be adjusted.
The ADC0808S is supplied in an HTQFP48 package.
2. Features
n 8-bit resolution
n High-speed sampling rate up to 250 MHz
n Maximum analog input frequency up to 560 MHz
n Programmable acquisition output clock (complete conversion signal)
n Differential analog input
n Integrated voltage regulator or external control for analog input full-scale
n Integrated voltage regulator for input common-mode reference
n Selectable 1.8 V CMOS or LVDS clock input
n 1.8 V CMOS digital outputs
n 1.8 V CMOS compatible static digital inputs
n Binary or 2’s complement CMOS outputs
n Only 2 clock cycles latency
n Industrial temperature range from −40 °Cto+85°C
n HTQFP48 package
3. Applications
n 2.5G and 3G cellular base infrastructure radio transceivers
n Wireless access systems
n Fixed telecommunications
ADC0808S125/250
Single 8-bit ADC, up to 125 MHz or 250 MHz
Rev. 03 — 24 February 2009 Product data sheet
