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PDF ( 数据手册 , 数据表 ) DG182

零件编号 DG182
描述 High-Speed Drivers with Dual SPST JFET Switches
制造商 Vishay Siliconix
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DG182 数据手册, 描述, 功能
DG180/181/182
Vishay Siliconix
High-Speed Drivers with Dual SPST JFET Switches
FEATURES
D Constant On-Resistance Over
Entire Analog Range
D Low Leakage
D Low Crosstalk
D Rad Hardness
BENEFITS
D Low Distortion
D Eliminates Large Signal Errors
D High Precision
D High Bandwidth Capability
D Fault Protection
APPLICATIONS
D Audio Switching
D Video Switching
D Sample/Hold
D Guidance and Control Systems
D Aerospace
DESCRIPTION
The DG180/181/182 are precision dual single-pole,
single-throw (SPST) analog switches designed to provide
accurate switching of video and audio signals. This series is
ideally suited for applications requiring a constant
on-resistance over the entire analog range.
The major difference in the devices is the on-resistance
(DG180—10 W, DG181—30 W, DG182—75 W). Reduced
errors are achieved through low leakage current (ID(on)
< 2 nA). Applications which benefit from the flat JFET
on-resistance include audio switching, video switching, and
data acquisition.
To achieve fast and accurate switch performance, each device
comprises four n-channel JFET transistors and a TTL
compatible bipolar driver. In the on state, each switch conducts
current equally well in either direction. In the off condition, the
switches will block up to 20 V peak-to-peak, with feedthrough
of less than –60 dB at 10 MHz.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
S1 1
D1 2
NC 3
NC 4
IN1 5
V+ 6
VL 7
Dual-In-Line
Top View
14 S2
13 D2
12 NC
11 NC
10 IN2
9 V–
8 VR
S1 1 14 S2
D1 2 13 D2
NC 3 12 NC
Flat
NC 4 Package 11 NC
IN1 5 Top View 10 IN2
V+ 6 9 V–*
VL 7 8 VR
Refer to JAN38510 Information, Military Section
S2
S1 D2
10
19
D1
2
IN2
8
IN1 3 Metal Can 7 V–
Top View
46
V+ 5 VR
VL
Document Number: 70031
S-52895—Rev. D, 16-Jun-97
*Common to Substrate and Case
TRUTH TABLE
Logic
0
1
Switch
ON
OFF
Logic “0” v 0.8 V
Logic “1” w 2.0 V
www.vishay.com S FaxBack 408-970-5600
4-1







DG182 pdf, 数据表
DG180/181/182
Vishay Siliconix
TEST CIRCUITS
Feedthrough due to charge injection may result in spikes at the leading and trailing edge of the output waveform.
tON: VS = 3 V
tOFF: VS = –3 V
+5 V
VL
S
IN
VR
+15 V
V+
D
V–
RL
1 kW
Logic
Input
VO
CL
100 pF
3V
0V
3V
0V
–15 V
CL (includes fixture and stray capacitance)
RL
VOUT + VS x RL ) rDS(on)
Switch
Output
–3 V
50%
90%
tON
tr <10 ns
tf <10 ns
tOFF
0V
90%
FIGURE 2. Switching Time
APPLICATION HINTSa
Switch
V+
Positive
Supply Voltage
(V)
V–
Negative
Supply
Voltage
(V)
VL
Logic Supply
Voltage
(V)
VR
Reference
Supply Voltage
(V)
VIN
Logic Input
Voltage
VINH(min)/VINL(max
)
(V)
DG180
DG181
DG182
15b
10
12
15b
10
12
–15
–20
–12
–15
–20
–12
5
5
5
5
5
5
GND
GND
GND
GND
GND
GND
2.0/0.8
2.0/0.8
2.0/0.8
2.0/0.8
2.0/0.8
2.0/0.8
Notes:
a. Application Hints are for DESIGN AID ONLY, not guaranteed and not subject to production testing.
b. Electrical Parameter Chart based on V+ = 15 V, VL = 5 V, VR = GND
VS
Analog
Voltage
Range
(V)
–7.5 to 15
–12.5 to 10
–4.5 to 12
–10 to 15
–15 to 10
–7 to 12
www.vishay.com S FaxBack 408-970-5600
4-8
Document Number: 70031
S-52895—Rev. D, 16-Jun-97














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