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HS-2420EH Schematic ( PDF Datasheet ) - Intersil Corporation

Teilenummer HS-2420EH
Beschreibung Radiation Hardened Fast Sample and Hold
Hersteller Intersil Corporation
Logo Intersil Corporation Logo 




Gesamt 11 Seiten
HS-2420EH Datasheet, Funktion
DATASHEET
Radiation Hardened Fast Sample and Hold
HS-2420EH
The HS-2420EH is a radiation hardened monolithic circuit
consisting of a high performance operational amplifier with its
output in series with an ultra-low leakage analog switch and a
MOSFET input unity gain amplifier.
With an external hold capacitor connected to the switch
output, a versatile high performance sample-and-hold or
track-and-hold circuit is formed. When the switch is closed, the
device behaves as an operational amplifier and any of the
standard op amp feedback networks may be connected
around the device to control gain, frequency response, etc.
When the switch is opened, the output will remain at its last
level.
Performance as a sample-and-hold compares very favorably
with other monolithic, hybrid, modular and discrete circuits.
Accuracy to better than 0.01% is achievable over the
temperature range. Fast acquisition is coupled with superior
droop characteristics, even at high temperatures. High slew
rate, wide bandwidth and low acquisition time produce
excellent dynamic characteristics. The ability to operate at
gains greater than 1 frequently eliminates the need for
external scaling amplifiers.
The device may also be used as a versatile operational
amplifier with a gated output for applications such as analog
switches, peak holding circuits, etc.
Specifications for Rad Hard QML devices are controlled by the
Defense Logistics Agency Land and Maritime (DLA). The SMD
numbers listed here must be used when ordering.
Detailed Electrical Specifications for these devices are
contained in SMD 5962-95669.
Features
• Electrically screened to SMD #5962-95669
• QML qualified per MIL-PRF-38535 requirements
• Maximum acquisition time
- 10V Step to 0.1% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4µs
- 10V Step to 0.01% . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6µs
• Maximum drift current . . . . . . . . . . . . . . . . . . . . . . . . . . . 10nA
(maximum over-temperature)
• TTL compatible control input
• Power supply rejection . . . . . . . . . . . . . . . . . . . . . . . . . 80dB
• Radiation tolerance
- High dose rate (50 to 300rad(Si)/s) . . . . . . . . 100krad(Si)
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . 100krad(Si)*
* Only the EH device is wafer-by-wafer acceptance tested at
the low dose rate and guaranteed to 50krad(Si). The
100krad(Si) limit is established by characterization only.
• No latch-up
Applications
• Data acquisition systems
• D to A deglitcher
• Auto zero systems
• Peak detector
• Gated op amp
OFFSET
ADJUST
34
V+
5
- INPUT 1
+ INPUT
2
-
+
-
+
7
OUTPUT
14
SAMPLE/
HOLD
CONTROL
HS-2420EH
13 5
11
GND V- HOLD
CAPACITOR
FIGURE 1. FUNCTIONAL DIAGRAM
March 17, 2015
FN8727.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.






HS-2420EH Datasheet, Funktion
HS-2420EH
Typical Performance Curves VSUPPLY = 15VDC, TA = +25°C, CH = 1000pF, Unless Otherwise Specified
1000
100
10
DRIFT DURING HOLD
AT +25°C mV/s
UNITY GAIN PHASE
MARGIN (°)
HOLD STEP
OFFSET
ERROR (mV)
1.0
UNITY GAIN
BANDWIDTH
(MHz)
0.1 MIN SAMPLE TIME
FOR 0.1% ACCURACY
10V SWINGS (ms)
0.01
10pF
100pF 1000pF
SLEW RATE/
CHARGE RATE
V/(ms)
0.01µF
0.1µF
CH VALUE
1.0µF
1000
LOWER 3dB FREQUENCY = 10Hz
OUTPUT NOISE
“HOLD” MODE
100
EQUIV. INPUT NOISE
“SAMPLE” MODE - 100K
SOURCE RESISTANCE
10
EQUIV. INPUT NOISE
“SAMPLE” MODE - 0K
SOURCE RESISTANCE
1
10 100
1k 10k
BANDWIDTH
100k
FIGURE 10. TYPICAL SAMPLE AND HOLD PERFORMANCE vs
HOLDING CAPACITOR
FIGURE 11. BROADBAND NOISE CHARACTERISTICS
1M
1000
100
10
100
80
60
40
20 CH = 1.0µF
CH = 0.1µF
0
CH = 0.01µF
CH = 100pF
CH = 1000pF
1
-50
-25
0 25 50 75
TEMPERATURE (°C)
100
FIGURE 12. DRIFT CURRENT vs TEMPERATURE
125
-20
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
FIGURE 13. OPEN LOOP FREQUENCY RESPONSE
-30
-40
-50
-60
-70
-80
-90
100 1k 10k 100k 1M 10M
±10V SINUSOIDAL INPUT FREQUENCY (Hz)
FIGURE 14. HOLD MODE FEEDTHROUGH ATTENUATION
CH = 1000pF
0
20
40
60
80
100
120
140
160
180
200
220
240
10
CH = 0.01µF
CH = 1000pF
CH ≤ 100pF
100 1k 10k 100k 1M
FREQUENCY (Hz)
CH = 1.0µF
CH = 0.1µF
10M 100M
FIGURE 15. OPEN LOOP PHASE RESPONSE
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March 17, 2015

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