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零件编号 | DG186 | ||
描述 | (DG186 - DG188) Hi-speed DRVRS W/spdt JFET Switches | ||
制造商 | Vishay Intertechnology | ||
LOGO | |||
1 Page
DG186/187/188
Vishay Siliconix
High-Speed Drivers with SPDT JFET Switches
FEATURES
www.datasheet4u.com
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 Telemetry
DESCRIPTION
The DG186/187/188 are precision single-pole, double-throw
(SPDT) 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
(DG186—10 W, DG187—30 W, DG188—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 two n-channel JFET transistors and a TTL
compatible bipolar driver. The driver is designed to achieve
break-before-make switching action, eliminating the
inadvertent shorting between channels and the crosstalk
which would result. 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
NC 1
NC 2
D1 3
S1 4
IN 5
V+ 6
VL 7
Dual-In-Line
Top View
14 NC
13 NC
12 D2
11 S2
10 NC
9 V–
8 VR
NC 1 14 NC
NC 2 13 NC
Flat
D1 3 Package 12 D2
S1 4 11 S2
Top View
IN 5 10 NC
V+ 6 9 V–*
VL 7 8 VR
Refer to JAN38510 Information, Military Section
D2
D1
1
S1
2
10
S2
9
8
NC
IN 3
Metal Can
7 V–*
Top View
46
V+ 5 VR
VL
*COMMON TO SUBSTRATE AND CASE
Document Number: 70033
S-52895—Rev. E, 16-Jun-97
TRUTH TABLE
Logic
0
SW1
OFF
SW2
ON
1 ON OFF
Logic “0” v 0.8 V
Logic “1” w 2.0 V
www.vishay.com S FaxBack 408-970-5600
4-1
DG186/187/188
Vishay Siliconix
TEST CIRCUITS
www.datasheet4u.com
Feedthrough due to charge injection may result in spikes at the leading and trailing edge of the output waveform.
+5 V
VL
VS1 S1
VS2 S2
IN
VR
+15 V
V+
D1
D2
V–
–15 V
tON: VS = 3 V
tOFF: VS = –3 V
RL
1 kW
Logic
Input
VO
3V
0V
CL
100 pF
3V
0V
Switch
Output
CL (includes fixture and stray capacitance)
RL
VOUT + VS x RL ) rDS(on)
–3 V
FIGURE 2. Switching Time
50%
90%
tON
tr <10 ns
tf <10 ns
tOFF
0V
90%
APPLICATION HINTSa
Switch
V+
Positive
Supply
Voltage
(V)
DG186
DG187
15b
10
12
15b
DG188
10
12
V–
Negative
Supply
Voltage
(V)
–15
–20
–12
–15
–20
–12
VL
Logic
Supply
Voltage
(V)
5
5
5
5
5
5
VR
Reference
Supply Voltage
(V)
GND
GND
GND
GND
GND
GND
VIN
Logic
Input Voltage
VINH(min)/VINL(max)
(V)
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: 70033
S-52895—Rev. E, 16-Jun-97
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页数 | 8 页 | ||
下载 | [ DG186.PDF 数据手册 ] |
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