器件名称: AD9049
功能描述: 9-Bit, 30 MSPS ADC
文件大小: 295.98KB 共12页
简 介:a
FEATURES Low Power: 300 mW On-Chip T/H, Reference Single +5 V Power Supply Operation Selectable 5 V or 3 V Logic I/O Wide Dynamic Performance APPLICATIONS Digital Communications Professional Video Medical Imaging Instrumentation
AINB AIN +5V +5V
9-Bit, 30 MSPS ADC AD9049
FUNCTIONAL BLOCK DIAGRAM
GND
AD9049
T/H
REFERENCE CKTS
ADC DECODE LOGIC 9
SUM AMP ENCODE TIMING
DAC
ADC
PRODUCT DESCRIPTION
+5V
The AD9049 is a complete 9-bit monolithic sampling analogto-digital converter (ADC) with an onboard track-and-hold and reference. The unit is designed for low cost, high performance applications and requires only +5 V and an encode clock to achieve 30 MSPS sample rates with 9-bit resolution. The encode clock is TTL compatible and the digital outputs are CMOS; both can operate with 5 V/3 V logic, selected by the user. The two-step architecture used in the AD9049 is optimized to provide the best dynamic performance available while maintaining low power consumption. A 2.5 V reference is included onboard, or the user can provide an external reference voltage for gain control or matching of multiple devices. Fabricated on an advanced BiCMOS process, the AD9049 is packaged in space saving surface mount packages (SOIC, SSOP) and is specified over the industrial (–40°C to +85°C) temperature range.
AIN (+3.3V ± 0.512V) 0.1F +5V 0.1F
3 10 5
4
2, 8, 11, 20, 22
9 BITS
AD9049
6
(2)
74AC574
0.1F 9 13 1, 7, 12, 21, 23
ENCODE
Figure 1. Typical Connections
REV. A
Information f……
