Precision
Digital Step Attenuator
50Ω
TTL Control, Pin Diode
Maximum Ratings
Operating Temperature
Storage Temperature
Input Power
DC Voltage
TTL
-55°C to 100°C
-55°C to 125°C
15 dBm
5.5 V
5.5V
ZFAT-51020
10 to 1000 MHz
Features
• wideband, 10 to 1000 MHz
• excellent step accuracy, 0.2 dB typ.
• small, shielded metal case
CASE STYLE: SSS173
Applications
• base stations
• cellular
• test sets
Connectors
Model
SMA
ZFAT-51020
BRACKET (OPTION “B”)
Price
$89.95
$2.50
Qty.
(1-9)
(1+)
Digital Step Attenuator Electrical Specifications
MODEL
NO.
FREQUENCY
(MHz)
PRIMARY ATTENUATION STEPS
(dB)
@TTL CONTROL PORT
(1,1,1)**
f
L
ZFAT-51020
10
f
U
1000
#1
5±0.4
#2
10±0.4
#3
20±0.5
ATTENUATION
(dB)
(0,0,0)
VSWR
(:1)
Nom.
35.0
Max.
4.0
L
1.6
M
1.4
U
1.5
Outline Drawing
L=10 to 100 MHz
M=100 to 500 MHz
** Total attenuation above thru-loss.
1. Step accuracy is specified for basic steps. For combination of steps accuracy is additive.
2. Thru-loss is minimum insertion loss with all attenuation elements bypassed (All TTL controls state are Low)
U=500 to 1000 MHz
Additional Specifications
DC Voltage
DC Current
Switching Time (50% TTL to within specified
accuracy of the next-selected attenuation step,
and to within 0.1 dB of steady-state Thru-Loss)
TTL Input High Threshold
TTL Input Low Threshold
TTL Toggle Rate
1dB Compression
+5V
12mA max.
10µs typ., 15µs max.,
2V min
0.8V max.
50 kHz typ.
0 dBm (10-100 MHz)
+10 dBm (100-1000MHz)
Outline Dimensions (
inch
)
mm
A
1.25
31.75
H
1.000
25.40
B
1.25
31.75
L
.125
3.18
C
.75
19.05
M
1.688
42.88
D
.63
16.00
N
2.18
55.38
E
.38
9.65
P
.75
19.05
F
1.000
25.40
Q
1.78
G
.125
3.18
wt.
75
.07 grams
Distribution Centers
NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 • EUROPE 44-1252-832600 • Fax 44-1252-837010
Mini-Circuits
®
INTERNET
http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
REV. OR
M97802
ZFAT-51020
DJ/VV/CP
051202
Mini-Circuits
ISO 9001 & ISO 14001
Certified
ZFAT-51020
ZFAT-51020
THRU LOSS
3.0
ZFAT-51020
STEP #1/#2/#3
ZFAT-51020
VSWR IN/OUT
1.6
1.5
STEP#1
STEP#2
STEP#3
THRU LOSS (dB)
2.8
2.6
2.4
2.2
2.0
10
208
406
604
802
1000
FREQUENCY (MHz)
ATTENUATION STEPS
(dB)
20.0
16.0
12.0
8.0
4.0
0.0
10
208
406
604
FREQUENCY (MHz)
802
1000
INPUT
OUTPUT
1.4
VSWR
1.3
1.2
1.1
1.0
10
208
406
604
802
1000
FREQUENCY (MHz)
Step Attenuation at TTL Control State
000
THRU LOSS
(MHz)
(dB)
10.00
2.68
49.60
2.53
148.60
2.43
208.00
2.47
247.60
2.50
346.60
2.60
406.00
2.67
445.60
2.70
544.60
2.79
604.00
2.84
703.00
2.90
762.40
2.92
821.80
2.96
881.20
2.99
940.60
3.03
1000.00
3.06
FREQ.
001
5
(dB)
4.96
4.98
4.98
4.96
4.94
4.96
4.96
4.94
4.95
4.97
4.94
4.96
5.01
5.03
5.04
5.09
010
10
(dB)
9.93
9.95
9.94
9.93
9.94
9.96
9.94
9.92
9.91
9.94
9.94
9.96
9.98
10.01
10.07
10.16
011
15
(dB)
14.90
14.90
14.93
14.89
14.88
14.87
14.82
14.80
14.81
14.84
14.82
14.81
14.88
14.96
14.98
15.08
100
20
(dB)
20.10
20.05
20.04
20.00
19.95
19.96
19.97
19.96
19.88
19.88
19.88
19.83
19.87
19.94
19.30
20.00
101
25
(dB)
24.96
24.95
25.05
24.91
24.83
24.96
24.91
24.96
24.85
24.90
24.90
24.85
24.92
24.92
24.98
25.28
110
30
(dB)
29.77
29.92
29.90
29.92
29.91
29.92
29.80
29.84
29.76
29.83
29.72
29.80
29.99
30.10
30.03
29.95
111
35
(dB)
34.53
34.69
34.88
34.86
24.76
34.42
34.60
34.47
34.43
34.54
34.86
35.22
35.21
35.13
35.08
35.55
INPUT VSWR
FREQ.
(MHz)
10.00
49.60
148.60
208.00
247.60
346.60
406.00
445.60
544.60
604.00
703.00
762.40
821.80
881.20
940.60
1000.00
001
1.11
1.08
1.08
1.10
1.12
1.15
1.17
1.18
1.21
1.22
1.22
1.22
1.22
1.22
1.22
1.21
010
1.15
1.10
1.10
1.12
1.14
1.18
1.21
1.22
1.26
1.28
1.30
1.31
1.32
1.32
1.32
1.32
011
1.09
1.06
1.06
1.08
1.09
1.12
1.14
1.16
1.19
1.21
1.23
1.25
1.26
1.27
1.28
1.29
100
1.20
1.13
1.12
1.15
1.17
1.21
1.24
1.26
1.30
1.32
1.35
1.36
1.36
1.37
1.36
1.36
101
1.10
1.07
1.07
1.09
1.10
1.13
1.16
1.17
1.20
1.22
1.24
1.25
1.26
1.27
1.27
1.28
110
1.14
1.10
1.10
1.12
1.13
1.18
1.20
1.22
1.25
1.27
1.30
1.31
1.32
1.33
1.33
1.33
111
1.09
1.06
1.06
1.08
1.09
1.12
1.14
1.16
1.19
1.21
1.21
1.25
1.27
1.28
1.29
1.30
OUTPUT VSWR
FREQ.
(MHz)
10.00
49.60
148.60
208.00
247.60
346.60
406.00
445.60
544.60
604.00
703.00
762.40
821.80
881.20
940.60
1000.00
001
1.21
1.14
1.15
1.17
1.19
1.26
1.30
1.32
1.37
1.39
1.42
1.43
1.43
1.42
1.41
1.40
010
1.15
1.11
1.10
1.13
1.14
1.19
1.22
1.24
1.28
1.30
1.35
1.37
1.37
1.38
1.39
1.40
011
1.15
1.10
1.10
1.12
1.14
1.19
1.22
1.24
1.28
1.30
1.34
1.37
1.38
1.39
1.41
1.42
100
1.07
1.05
1.05
1.06
1.07
1.10
1.12
1.13
1.15
1.16
1.20
1.22
1.23
1.24
1.26
1.27
101
1.08
1.05
1.05
1.06
1.07
1.10
1.11
1.13
1.15
1.16
1.20
1.20
1.23
1.25
1.27
1.27
110
1.08
1.05
1.05
1.06
1.06
1.10
1.12
1.13
1.15
1.16
1.20
1.22
1.23
1.25
1.27
1.28
111
1.08
1.05
1.05
1.16
1.07
1.09
1.11
1.12
1.15
1.17
1.20
1.22
1.23
1.25
1.27
1.28
*
Step attenuation above thru-loss (TTL logic 000)
Distribution Centers
NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 • EUROPE 44-1252-832600 • Fax 44-1252-837010
Mini-Circuits
®
INTERNET
http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
Mini-Circuits
ISO 9001 & ISO 14001
Certified
Power technology
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