CBA8470B

DESCRIPTION

The CBA8470B is a broadband 5-bit GaAs IC digital attenuators in low cost leadless surface mount packages. This single 

positive control line per bit digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it 

suitable for a wide variety of RF and IF applications. Covering DC to 3 GHz, the insertion loss is less than 2.4 dB typical. 

The attenuator bit values are 1 (LSB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Attenuation accuracy is excellent

at ± 0.3 dB typical step error with an IIP3 of +45 dBm. Five TTL/CMOS control inputs are used to select each attenuation 

state. A single Vdd bias of +5V is required. 

FEATURES

 1 dB LSB Steps to 31 dB

 Single Control Line Per Bit

 TTL/CMOS Compatible Control

 ±0.3 dB Typical Step Error

 Single +5V Supply

 Small QFN (16-pin, 3 x 3 mm) package (MSL1,

260°C per JEDEC J-STD-020)

APPLICATIONS

 Cellular; UMTS/3G Infrastructure

 ISM, MMDS, WLAN, WiMAX

 Microwave Radio & VSAT

 Test Equipment and Sensors

规格书CBA8470B 1 dB LSB GaAs MMIC 5-BIT DIGITAL POSITIVE CONTROL A