Precision
Digital Step Attenuator
50
Ω
TTL Control, Pin Diode 10 to 1000 MHz
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-4816
Features
• wideband, 10 to 1000 MHz
• excellent step accuracy, 0.2 dB typ.
• small, shielded metal case
CASE STYLE: SSS173
Connectors
Model
SMA
ZFAT-4816
BRACKET (OPTION “B”)
Price
$89.95
$2.50
Qty.
(1-9)
(1+)
Applications
• base stations
• cellular
• test sets
Digital Step Attenuator Electrical Specifications
MODEL
NO.
FREQUENCY
(MHz)
PRIMARY ATTENUATION STEPS
(dB)
@TTL CONTROL PORT
(1,1,1)**
f
L
ZFAT-4816
10
f
U
1000
#1
4±0.4
#2
8±0.4
#3
16±0.5
ATTENUATION
(dB)
(0,0,0)
VSWR
(:1)
Nom.
28.0
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
J
--
--
B
1.25
31.75
K
--
--
C
0.75
19.05
L
.125
3.18
D
.63
16.00
M
1.688
42.88
E
.38
9.65
N
2.18
55.37
F
1.000
25.40
P
.75
19.05
G
.125
3.18
H
1.000
25.40
Q
wt
.07 grams
1.78
75
Mini-Circuits
ISO 9001 ISO 14001
CERTIFIED
RF/IF MICROWAVE COMPONENTS
®
minicircuits.com
REV. OR
M97802
ZFAT-4816
DJ/VV/CP
070606
EW
ALL N
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site
The Design Engineers Search Engine
Provides ACTUAL Data Instantly From MINI-CIRCUITS At:
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ZFAT-4816
ZFAT-4816
THRU LOSS
3.0
18.0
ZFAT-4816
STEP #1/#2/#3
1.6
1.5
1.4
ZFAT-4816
VSWR IN/OUT
INPUT
OUTPUT
THRU LOSS (dB)
2.8
2.6
2.4
2.2
2.0
10
208
406
604
802
1000
FREQUENCY (MHz)
ATTENUATION STEPS
(dB)
16.0
14.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
10
208
406
604
FREQUENCY (MHz)
802
1000
STEP#1
STEP#2
STEP#3
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
2.58
49.60
2.19
148.60
2.20
208.00
2.23
247.60
2.28
346.60
2.36
406.00
2.41
445.60
2.45
544.60
2.48
604.00
2.55
703.00
2.55
762.40
2.58
821.80
2.56
881.20
2.61
940.60
2.64
1000.00
2.65
FREQ.
001
4
(dB)
4.08
4.07
4.05
4.08
4.06
4.05
4.02
4.07
4.02
4.03
4.01
4.02
4.06
4.07
4.09
4.06
010
8
(dB)
7.97
8.01
8.05
8.02
8.05
7.99
8.00
8.00
7.99
8.03
8.02
8.08
8.14
8.15
8.13
8.12
011
12
(dB)
12.05
12.07
12.12
12.13
12.08
12.06
12.08
11.99
11.97
12.01
12.00
12.12
12.09
12.11
12.16
12.13
100
16
(dB)
16.09
16.20
16.14
16.19
16.14
16.17
16.14
16.09
16.16
16.13
16.17
16.20
16.24
16.28
16.24
16.16
101
20
(dB)
20.15
20.22
20.12
20.34
20.20
20.14
20.21
20.16
20.26
20.17
20.15
20.30
20.26
20.25
20.36
20.34
110
24
(dB)
23.88
24.12
24.07
24.10
24.19
23.99
23.98
24.21
24.46
24.10
24.22
24.12
24.15
24.17
24.33
24.16
111
28
(dB)
28.02
28.16
28.26
28.37
28.31
28.29
27.93
28.32
28.32
28.34
27.91
28.39
27.99
28.06
28.22
28.02
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
1.24
1.07
1.08
1.09
1.10
1.13
1.14
1.15
1.16
1.16
1.16
1.16
1.15
1.14
1.13
1.12
010
1.27
1.08
1.09
1.10
1.11
1.15
1.17
1.18
1.21
1.22
1.24
1.25
1.25
1.26
1.26
1.26
011
1.17
1.05
1.05
1.06
1.07
1.09
1.11
1.11
1.13
1.15
1.16
1.17
1.18
1.19
1.20
1.21
100
1.38
1.12
1.13
1.15
1.16
1.21
1.24
1.26
1.30
1.32
1.34
1.36
1.36
1.37
1.37
1.37
101
1.21
1.06
1.06
1.08
1.08
1.11
1.13
1.14
1.16
1.16
1.18
1.19
1.19
1.19
1.19
1.19
110
1.25
1.08
1.08
1.10
1.11
1.14
1.16
1.17
1.20
1.22
1.24
1.26
1.26
1.28
1.28
1.30
111
1.17
1.05
1.05
1.06
1.07
1.09
1.10
1.11
1.14
1.15
1.17
1.18
1.19
1.20
1.21
1.23
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
1.42
1.14
1.11
1.12
1.15
1.22
1.29
1.29
1.35
1.31
1.31
1.28
1.26
1.26
1.29
1.28
010
1.29
1.09
1.07
1.06
1.08
1.20
1.19
1.19
1.26
1.24
1.25
1.25
1.22
1.22
1.23
1.28
011
1.29
1.10
1.06
1.05
1.07
1.12
1.18
1.18
1.26
1.23
1.26
1.26
1.23
1.23
1.25
1.30
100
1.11
1.05
1.05
1.02
1.05
1.09
1.12
1.13
1.19
1.19
1.21
1.23
1.20
1.20
1.19
1.26
101
1.11
1.05
1.04
1.02
1.04
1.07
1.13
1.13
1.20
1.19
1.23
1.23
1.19
1.21
1.19
1.25
110
1.10
1.05
1.04
1.02
1.04
1.07
1.11
1.13
1.19
1.18
1.23
1.23
1.20
1.21
1.21
1.27
111
1.11
1.06
1.04
1.01
1.04
1.08
1.12
1.12
1.20
1.20
1.21
1.24
1.19
1.21
1.22
1.26
*
Step attenuation above thru-loss (TTL logic 000)
Mini-Circuits
ISO 9001 ISO 14001
CERTIFIED
RF/IF MICROWAVE COMPONENTS
®
minicircuits.com
EW
ALL N
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site
The Design Engineers Search Engine
Provides ACTUAL Data Instantly From MINI-CIRCUITS At:
www.minicircuits.com
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