AD9284 Datasheet | Analog Devices

FEATURES GENERAL DESCRIPTION Single 1.8 V supply operation SNR: 49.3 d BFS at 200 MHz input at 250 MSPS SFDR: 65 d Bc at 200 MHz input at 250 MSPS Low power: 314 m W at 250 MSPS On-chip reference and track-and-hold 1.2 V p-p analog input range for each channel Differential input with 500 MHz bandwidth LVDS-pliant digital output DNL: ±0.2 LSB Serial port control options Offset binary, Gray code, or twos plement data format Optional clock duty cycle stabilizer Built-in selectable digital test pattern generation Pin-programmable power-down function Available in 48-lead LFCSP APPLICATIONS munications Diversity radio systems I/Q demodulation systems Battery-powered instruments Handheld scope meters Low cost digital oscilloscopes OTS: video over fiber The AD9284 is a dual 8-bit, monolithic sampling, analog-to-digital converter (ADC) that supports simultaneous operation and is optimized for low cost, low power, and ease of use. Each ADC operates at up to a 250 MSPS conversion rate with outstanding dynamic performance. The ADC requires a single 1.8 V supply and an encode clock for full performance operation. No external reference ponents are required for many applications. The digital outputs are LVDS patible. The AD9284 is available in a Pb-free, 48-lead LFCSP that is specified over the industrial temperature range of - 40°C to +85°C. PRODUCT HIGHLIGHTS 1. Integrated Dual 8-Bit, 250 MSPS ADC. 2. Single 1.8 V Supply Operation with LVDS Outputs. 3. Power-Down Option Controlled via a Pin-Programmable Setting. FUNCTIONAL BLOCK DIAGRAM SDIO/ PWDN CSB SCLK OE CLK+ CLK- VIN+A VIN- A VCM VREF 1.0V VREF VIN- B VIN+B LVDS OUTPUT BUFFER D7+ (MSB), D7- (MSB) D0+ (LSB), D0- (LSB) (CHANNEL A) REF SELECT ×1.5 CLOCK MANAGEMENT DCO GENERATION DCO+ DCO- D7+ (MSB), D7- (MSB) D0+ (LSB), D0- (LSB) (CHANNEL B) LVDS OUTPUT BUFFER 09085-001 RBIAS AGND AVDD DRVDD DRGND Figure 1. Rev. B Document Feedback Information furnished by Analog Devices is believed to...