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HA-2425 の電気的特性と機能

HA-2425のメーカーはIntersil Corporationです、この部品の機能は「3.2s Sample and Hold Amplifiers」です。


製品の詳細 ( Datasheet PDF )

部品番号 HA-2425
部品説明 3.2s Sample and Hold Amplifiers
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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HA-2425 Datasheet, HA-2425 PDF,ピン配置, 機能
HA-2420, HA-2425
November 1996
3.2µs Sample and Hold Amplifiers
Features
• Maximum Acquisition Time
- 10V Step to 0.1%. . . . . . . . . . . . . . . . . . . . . 4µs (Max)
- 10V Step to 0.01%. . . . . . . . . . . . . . . . . . . . 6µs (Max)
• Low Droop Rate (CH = 1000pF). . . . . . . . 5µV/ms (Typ)
• Gain Bandwidth Product . . . . . . . . . . . . . 2.5MHz (Typ)
• Low Effective Aperture Delay Time . . . . . . . 30ns (Typ)
• TTL Compatible Control Input
±12V to ±15V Operation
Applications
• 12-Bit Data Acquisition
• Digital to Analog Deglitcher
• Auto Zero Systems
• Peak Detector
• Gated Operational Amplifier
Ordering Information
PART NUMBER
HA1-2420-2
HA1-2425-5
HA3-2425-5
HA4P2425-5
HA9P2425-5
TEMP.
RANGE (oC)
PACKAGE
-55 to 125 14 Ld CERDIP
0 to 75 14 Ld CERDIP
0 to 75 14 Ld PDIP
0 to 75 20 Ld PLCC
0 to 75 14 Ld SOIC
PKG.
NO.
F14.3
F14.3
E14.3
N20.35
M14.15
Description
The HA-2420 and HA-2425 is a monolithic circuit consisting
of a high performance operational amplifier with its output in
series with an ultra-low leakage analog switch and JFET
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. For more information,
please see Application Note AN517.
The MIL-STD-883 data sheet for this device is available on
request.
Pinouts
HA-2420 (CERDIP)
HA-2425 (CERDIP, PDIP, SOIC)
TOP VIEW
-IN 1
+IN 2
OFFSET ADJ. 3
OFFSET ADJ. 4
V- 5
NC 6
OUTPUT 7
14 S/H CONTROL
13 GND
12 NC
11 HOLD CAP.
10 NC
9 V+
8 NC
HA-2425
(PLCC)
TOP VIEW
3 2 1 20 19
OFFSET ADJ. 4
NC 5
OFFSET ADJ. 6
NC 7
V- 8
18 NC
17 NC
16 HOLD CAP.
15 NC
14 NC
9 10 11 12 13
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
5-1
File Number 2856.2

1 Page





HA-2425 pdf, ピン配列
HA-2420, HA-2425
Electrical Specifications Test Conditions (Unless Otherwise Specified) VSUPPLY = ±15.0V; CH = 1000pF; Digital Input: VIL = +0.8V
(Sample), VIH = +2.0V (Hold), Unity Gain Configuration (Output tied to Negative Input) (Continued)
PARAMETER
TEST
CONDITIONS
TEMP.
HA-2420-2
(oC) MIN TYP MAX
HA-2425-5
MIN TYP MAX UNITS
Acquisition Time (Note 2)
To 0.01% 10V Step
25
-
3.2 6
- 3.2 6 µs
Hold Step Error
Hold Mode Settling Time
VIN = 0V
To ±1mV
25 - 10 20 - 10 20 mV
25 - 860 -
- 860 -
ns
Aperture Time (Note 3)
25 - 30 -
- 30 - ns
Effective Aperture Delay Time
25 - 30 -
- 30 - ns
Aperture Uncertainty
25 - 5 - - 5 - ns
Drift Current (Note 2)
HA1-2420
VIN = 0V
25 - 5 - - 5 - pA
Full -
1.8 10
-
-
- nA
HA1-2425
Full - - - - 0.1 1.0 nA
HA3-2425, HA4P2425, HA9P2425
Full - - - - 7.5 10.0 nA
POWER SUPPLY CHARACTERISTICS
Supply Current (+)
25 - 3.5 5.5 - 3.5 5.5 mA
Supply Current (-)
25 - 2.5 3.5 - 2.5 3.5 mA
Power Supply Rejection
Full 80
90
-
74 90
-
dB
NOTES:
2. AV = ±1, RL = 2k, CL = 50pF.
3. Derived from computer simulation only; not tested.
Functional Diagram
OFFSET
ADJUST
34
V+
9
-INPUT
+INPUT
S/H
CONTROL
1
2
14
-
+
13
GND
-7
+ OUT
HA-2420/2425
5 11
V- HOLD
CAPACITOR
Test Circuits and Waveforms
INPUT
-IN
+IN
S/H HOLD
CONTROL CAP
GND
OUTPUT
S/H CONTROL
INPUT
CH
FIGURE 1. HOLD STEP ERROR AND DRIFT CURRENT
S/H
CONTROL
HOLD
SAMPLE
OUTPUT
VSTEP
NOTE: Set rise/fall times of S/H Control to approximately 20ns.
FIGURE 2. HOLD STEP ERROR TEST
5-3


3Pages


HA-2425 電子部品, 半導体
HA-2420, HA-2425
Glossary of Terms
Acquisition Time
The time required following a “sample” command, for the output
to reach its final value within ±0.1% or ±0.01%. This is the mini-
mum sample time required to obtain a given accuracy, and
includes switch delay time, slewing time and settling time.
Aperture Time
The time required for the sample-and-hold switch to open,
independent of delays through the switch driver and input
amplifier circuitry. The switch opening time is that interval
between the conditions of 10% open and 90% open.
Effective Aperture Delay Time (EADT)
The difference between the digital delay time from the Hold
command to the opening of the S/H switch, and the propaga-
tion time from the analog input to the switch.
EADT may be positive, negative or zero. If zero, the S/H ampli-
fier will output a voltage equal to VIN at the instant the Hold
command was received. For negative EADT, the output in Hold
(exclusive of pedestal and droop errors) will correspond to a
value of VIN that occurred before the Hold command.
Aperture Uncertainty
The range of variation in Effective Aperture Delay Time. Aper-
ture Uncertainty (also called Aperture Delay Uncertainty,
Aperture Time Jitter, etc.) sets a limit on the accuracy with
which a waveform can be reconstructed from sample data.
Drift Current
The net leakage current from the hold capacitor during the
hold mode. Drift current can be calculated from the droop
rate using the formula:
ID (pA) = CH (pF) × ∆----V--t- (V s )
Typical Performance Curves
1000
100
10
DRIFT DURING HOLD MIN. SAMPLE TIME
AT 25oC (mV/s)
FOR 0.1% ACCURACY
10V SWINGS (µs)
UNITY GAIN PHASE
MARGIN (DEGREES)
HOLD STEP
OFFSET
ERROR (mV)
1000
OUTPUT NOISE
“HOLD” MODE
100
EQUIV. INPUT NOISE
“SAMPLE” MODE - 100k
SOURCE RESISTANCE
1.0
0.1
0.01
10pF
UNITY GAIN
BANDWIDTH
(MHz)
SLEW RATE
(V/µs)
100pF
1000pF 0.01µF
CH VALUE
0.1µF
1.0µF
FIGURE 10. TYPICAL SAMPLE AND HOLD PERFORMANCE AS
A FUNCTION OF HOLDING CAPACITOR
10
EQUIV. INPUT NOISE
“SAMPLE” MODE - 0
SOURCE RESISTANCE
1
10 100 1K 10K 100K 1M
BANDWIDTH (LOWER 3dB FREQUENCY = 10Hz)
FIGURE 11. BROADBAND NOISE CHARACTERISTICS
1000
100
10
1
-50
-25
0 25 50 75
TEMPERATURE (oC)
100 125
FIGURE 12. DRIFT CURRENT vs TEMPERATURE
100
90
80
70
60
50
40
30
20
10
0
-10
-20
-30
10
CH = 100pF
CH = 1000pF
CH = 0.01µF
CH = 1.0µF
CH = 0.1µF
100 1K 10K 100K 1M
FREQUENCY (Hz)
10M 100M
FIGURE 13. OPEN LOOP FREQUENCY RESPONSE
5-6

6 Page



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共有リンク

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部品番号部品説明メーカ
HA-2420

3.2s Sample and Hold Amplifiers

Intersil Corporation
Intersil Corporation
HA-2425

3.2s Sample and Hold Amplifiers

Intersil Corporation
Intersil Corporation


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