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PDF CHT4012-98F Data sheet ( Hoja de datos )
| Número de pieza | CHT4012-98F | |
| Descripción | GaAs Monolithic Microwave IC | |
| Fabricantes | United Monolithic Semiconductors | |
| Logotipo |  |
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CHT4012-98F
RoHS COMPLIANT
DC-6GHz 6-BIT DIGITAL ATTENUATOR
GaAs Monolithic Microwave IC
Description
The CHT4012-98F 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 14dB. A
CMOS and TTL compatible interface is
available on chip.
The circuit is mainly dedicated to defence
and space systems and is also well suited for
a wide range of microwave applications and
systems.
The circuit is manufactured with a pHEMT
process, 0.25µm gate length and electron
beam gate lithography.
It is available in chip form
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
■ Chip size 2.41x1.41x0.1mm
Frequency :
0.1GHz-6GHz
Main Characteristics
Tamb.= +25°C
Symbol
Parameter
Freq
Frequency range
IL Insertion Loss
Rms_att_er RMS of attenuation error
Rms_phivar RMS of phase variation (0.1 to 6GHz)
Min Typ Max Unit
DC 6 GHz
2.5 dB
0.3 dB
1°
Ref. : DSCHT40121069 - 10 Mar 11
1/14 Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - BP46 - 91401 Orsay Cedex France
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
1 page  
DC-6GHz 6-BIT DIGITAL ATTENUATOR
Typical Measurements in test fixture:
[S] parameters
T= +25°C, V+ = +5V, V- = -5V
S21 versus Frequency
Attenuator state 0
CHT4012-98F
S11 versus Frequency
All attenuator states
S22 versus Frequency
All attenuator states
Ref. : DSCHT40121069 - 10 Mar 11
5/14
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Specifications subject to change without notice
5 Page 
DC-6GHz 6-BIT DIGITAL ATTENUATOR CHT4012-98F
Bonding recommendations
Pin number
2
4
6
7
8
9
10
13
Pad name
A1
A2
A3
A4
A5
A6
V-
V+
Value
0V / 3.3V or 0V / 5V
0V / 3.3V or 0V / 5V
0V / 3.3V or 0V / 5V
0V / 3.3V or 0V / 5V
0V / 3.3V or 0V / 5V
0V / 3.3V or 0V / 5V
-5V
+5V
NOTE:
Control voltages of the attenuator bits are both CMOS and TTL compatible
Ref. : DSCHT40121069 - 10 Mar 11
11/14
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Specifications subject to change without notice
11 Page | ||
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