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CHT4012-98F Schematic ( PDF Datasheet ) - United Monolithic Semiconductors

Teilenummer CHT4012-98F
Beschreibung GaAs Monolithic Microwave IC
Hersteller United Monolithic Semiconductors
Logo United Monolithic Semiconductors Logo 




Gesamt 14 Seiten
CHT4012-98F Datasheet, Funktion
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
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






CHT4012-98F Datasheet, Funktion
CHT4012-98F DC-6GHz 6-BIT DIGITAL ATTENUATOR
Typical Measurements in test fixture:
Attenuator performances: Attenuation error
T= +25°C, V+ = +5V, V- = -5V
Attenuation error versus frequency
All attenuator states
Attenuation error versus Attenuator state
0.1GHz < Freq. < 6GHz
RMS Attenuation error
Attenuation versus Attenuator state
0.1GHz < Freq. < 6GHz
Ref. : DSCHT40121069 - 10 Mar 11
6/14
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

6 Page









CHT4012-98F pdf, datenblatt
CHT4012-98F DC-6GHz 6-BIT DIGITAL ATTENUATOR
Attenuator control table
Voltage to apply on the pads A1 to A6:
state
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Att
(dB)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
10.5
11
11.5
12
12.5
13
13.5
14
14.5
15
15.5
16
A6 A5 A4 A3 A2 A1 state
0 00000
0 0 0 0 0 3.3
0 0 0 0 3.3 0
0 0 0 0 3.3 3.3
0 0 0 3.3 0 0
0 0 0 3.3 0 3.3
0 0 0 3.3 3.3 0
0 0 0 3.3 3.3 3.3
0 0 3.3 0 0 0
0 0 3.3 0 0 3.3
0 0 3.3 0 3.3 0
0 0 3.3 0 3.3 3.3
0 0 3.3 3.3 0 0
0 0 3.3 3.3 0 3.3
0 0 3.3 3.3 3.3 0
0 0 3.3 3.3 3.3 3.3
0 3.3 0 0 0 0
0 3.3 0 0 0 3.3
0 3.3 0 0 3.3 0
0 3.3 0 0 3.3 3.3
0 3.3 0 3.3 0 0
0 3.3 0 3.3 0 3.3
0 3.3 0 3.3 3.3 0
0 3.3 0 3.3 3.3 3.3
0 3.3 3.3 0 0 0
0 3.3 3.3 0 0 3.3
0 3.3 3.3 0 3.3 0
0 3.3 3.3 0 3.3 3.3
0 3.3 3.3 3.3 0 0
0 3.3 3.3 3.3 0 3.3
0 3.3 3.3 3.3 3.3 0
0 3.3 3.3 3.3 3.3 3.3
3.3 0 0 0 0 0
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
Att A6 A5 A4 A3 A2 A1
(dB)
16.5 3.3 0 0 0 0 3.3
17 3.3 0 0 0 3.3 0
17.5 3.3 0 0 0 3.3 3.3
18 3.3 0 0 3.3 0 0
18.5 3.3 0 0 3.3 0 3.3
19 3.3 0 0 3.3 3.3 0
19.5 3.3 0 0 3.3 3.3 3.3
20 3.3 0 3.3 0 0 0
20.5 3.3 0 3.3 0 0 3.3
21 3.3 0 3.3 0 3.3 0
21.5 3.3 0 3.3 0 3.3 3.3
22 3.3 0 3.3 3.3 0 0
22.5 3.3 0 3.3 3.3 0 3.3
23 3.3 0 3.3 3.3 3.3 0
23.5 3.3 0 3.3 3.3 3.3 3.3
24 3.3 3.3 0 0 0 0
24.5 3.3 3.3 0 0 0 3.3
25 3.3 3.3 0 0 3.3 0
25.5 3.3 3.3 0 0 3.3 3.3
26 3.3 3.3 0 3.3 0 0
26.5 3.3 3.3 0 3.3 0 3.3
27 3.3 3.3 0 3.3 3.3 0
27.5 3.3 3.3 0 3.3 3.3 3.3
28 3.3 3.3 3.3 0 0 0
28.5 3.3 3.3 3.3 0 0 3.3
29 3.3 3.3 3.3 0 3.3 0
29.5 3.3 3.3 3.3 0 3.3 3.3
30 3.3 3.3 3.3 3.3 0 0
30.5 3.3 3.3 3.3 3.3 0 3.3
31 3.3 3.3 3.3 3.3 3.3 0
31.5 3.3 3.3 3.3 3.3 3.3 3.3
Ref. : DSCHT40121069 - 10 Mar 11
12/14
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

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