CHT4012-QDG Datasheet, PDF (1/12 Pages) United Monolithic Semiconductors – DC-6GHz 6-BIT DIGITAL ATTENUATOR

CHT4012-QDG
RoHS COMPLIANT
DC-6GHz 6-BIT DIGITAL ATTENUATOR
GaAs Monolithic Microwave IC in SMD leadless package
Description
The CHT4012-QDG is a DC-6GHz monolithic
6-bit digital attenuator with a LSB = 0.5dB
offering a high dynamic range and a high
accuracy, the RMS amplitude error is
typically as low as 0.3dB. The circuit provides
low insertion loss 2.5dB associated to input
and output return losses better than 13dB. A
CMOS and TTL compatible interface is
available on chip.
It is designed for a wide range of
applications, from military to commercial
communication systems.
The circuit is manufactured with a pHEMT
process, 0.25µm gate length, via holes
through the substrate, air bridges and
electron beam gate lithography.
It is supplied in RoHS compliant SMD
package.
Main Features
■ Broadband performances: DC-6GHz
■ Insertion Loss (state 0): 2.5dB
■ RMS attenuation error: 0.3dB
■ RMS phase variation: 1deg
■ DC bias: V+=5V and V-=-5V
■ No decoupling capacitance on Input and
Output RF accesses
■ 24L-QFN4x4
■ MSL1
UMS
T4012
YYWW
A2 A3 A4 A5 A6 -V
24 23 22 21 20 19
A1 ₁
18 +V
GND 2
GND 3
Control interface
17 ^GND
16 GND
RFin 4
GND ₅
GND ₆
A1 A2 A3 A4 A5 A6
15 RFout
14 ^GND
13 ^GND
7 8 9 10 11 12
GND
GND
Frequency :
0.5GHz-6GHz
Main Characteristics
Tamb.= +25°C
Symbol
Freq
IL
Rms_att_err
Rms_phivar
Parameter
Frequency range
Insertion Loss
RMS of attenuation error
RMS of phase variation (0.5 to 6GHz)
Min Typ Max Unit
DC
6 GHz
2.5
dB
0.3
dB
1
°
Ref. : DSCHT4012-QDG1138 - 18 May 11
1/12
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - BP46 - 91401 Orsay Cedex France
Tel.: [phone] - Fax: [phone]