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PDF IH401A Data sheet ( Hoja de datos )
| Número de pieza | IH401A | |
| Descripción | QUAD Varafet Analog Switch | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de IH401A (archivo pdf) en la parte inferior de esta página. Total 5 Páginas | ||
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Semiconductor
April 1999
Features
NO
Call
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IH401A
QUAD Varafet Analog Switch
Description
• rDS(ON) (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Ω
• ID(OFF) (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10pA
• Switching Times (RL = 1kΩ)
- tON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ns
- tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75ns
• Built-In Overvoltage Protection . . . . . . . . . . . . . . ±25V
• Charge Injection Error (Typ) into 0.01µF Capacitor . . 3mV
• CISS (Typ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <1pF
• Can Be Used for Hybrid Construction
Part Number Information
PART
NUMBER
IH401A
TEMP. RANGE
(oC)
PACKAGE
-55 to 125
16 Ld CERDIP
The IH401A is made up of 4 monolithically constructed
combinations of varacitor type diode and a N-Channel JFET.
The JFET itself is very similar to the popular 2N4391, and
the driver diode is specially designed, such that its
capacitance is a strong function of the voltage across it. The
driver diode is electrically in series with the gate of the
N-Channel FET and simulates a back-to-back diode
structure. This structure is needed to prevent forward biasing
the source-to-gate or drain-to-gate junctions of the JFET
when used in switching applications.
Previous applications of JFETs required the addition of
diodes, in series with the gate, and then perhaps a gate-to-
source referral resistor or a capacitor in parallel with the
diode; therefore, at least 3 components were required to
perform the switch function. The IH401A does this same job
in one component (with a great deal better performance
characteristics).
Like a standard JFET, the practically perform a solid state
switch function translator should be added to drive the diode.
This translator takes the TTL levels and converts them to
voltages required to drive the diode/FET system (typically a
0V to -15V translation and a 3V to +15V shift). With ±15V
power supplies, the IH401A will typically switch 22VP-P at
any frequency from DC to 20MHz, with less than 50Ω
rDS(ON) .
Pinout
IH401A
(CERDIP)
TOP VIEW
S1 1
D1 2
DR1 3
4
DR2 5
S2 6
D2 7
8
16 D4
15 S4
14 DR4
13
12 DR3
11 S3
10 D3
9
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1999
14-1
File Number 3128.2
1 page  
Switching Information (Continued)
1 16
2 15
3 14
4 IH401A 13
5 12
6 11
7 10
89
IH401A
θ1
1
2
3
θ1
4
θ2
5
6
7
θ2
8
IH6201
16
15
14 -15V
13
12 +5V
11 +15V
10
9
T2L INPUT 1
T2L INPUT 2
FIGURE 8. DUAL SPDT ANALOG SWITCH
1 16
2 15
3 14
4 IH401A 13
5 12
6 11
7 10
89
θ1
1
2
3
4
5
6
7
θ2
8
IH6201
16
15
14 -15V
13
12 +5V
11 +15V
10
9
T2L INPUT
T2L INPUT
FIGURE 9. DUAL DPST ANALOG SWITCH
14-5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet IH401A.PDF ] | |
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