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DATASHEET
ISL70227SEH
36V Radiation Hardened Dual Precision Operational Amplifier
FN7958
Rev 3.00
July 18, 2014
The ISL70227SEH is a high precision dual operational
amplifier featuring very low noise, low offset voltage, low input
bias current and low temperature drift. These features plus its
radiation tolerance, make the ISL70227SEH the ideal choice
for applications requiring both high DC accuracy and AC
performance. The combination of precision, low noise and
small footprint provides the user with outstanding value and
flexibility relative to similar competitive parts.
Applications for these amplifiers include precision and
analytical instrumentation, active filters, and power supply
controls.
The ISL70227SEH is available in a 10 lead hermetic ceramic
flatpack and operates over the extended temperature range of
-55°C to +125°C.
Applications
• Power supply control
• Industrial controls
• Active filter blocks
• Data acquisition
Features
• Electrically screened to DLA SMD# 5962-12223
• Wide supply range . . . . . . . . . . . . . . . . . . . . 4.5V to 42V max.
• Very low voltage noise . . . . . . . . . . . . . . . . . . . 2.5nV/Hz, typ.
• Gain-bandwidth product. . . . . . . . . . . . . . . . . . . . . . . . . 10MHz
• Superb offset drift . . . . . . . . . . . . . . . . . . . . . . . . 1µV/°C, max
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• Low input voltage offset . . . . . . . . . . . . . . . . . . . . . . 10µV, typ.
• Input bias current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1nA, typ.
• Unity gain stable
• No phase reversal
• Radiation tolerance
- High dose rate . . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)
- Low dose rate . . . . . . . . . . . . . . . . . . . . . . . . . . 100krad(Si)*
- SEL/SEB LETTH (VS = ±18V) . . . . . . . . . 86.4MeV/mg/cm2
- SEL immune (SOI process)
* Product capability established by initial characterization. The
EH version is acceptance tested on a wafer by wafer basis to
50krad(Si) at low dose rate.
Related Literature
AN1669, “ISL70227SRH Evaluation Board User’s Guide”
AN1756, “Single Events Effects Testing of the
ISL70227SRH, Dual 36V Rad Hard Precision Operational
Amplifiers”
R3
243Ω
V+
R1
VIN
95.3Ω
R2
232Ω
C1
-
ISL70227SEH
+
C2
680pF
V-
OUTPUT
1.5nF
SALLEN-KEY LOW PASS FILTER (1MHz)
FIGURE 1. TYPICAL APPLICATION
25
20
GROUNDED
15
BIASED
10
5
0
0 10 20 30 40 50 60 70 80 90 100
TOTAL DOSE (krad(Si))
FIGURE 2. OFFSET VOLTAGE vs LOW DOSE RADIATION
FN7958 Rev 3.00
July 18, 2014
Page 1 of 18

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ISL70227SEH
Ordering Information
ORDERING SMD NUMBER
(Note 2)
PART
NUMBER
TEMP RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
5962R1222301VXC (Note 1)
ISL70227SEHVF
-55 to +125
10 Ld Flatpack
K10.A
ISL70227SEHF/PROTO (Note 1)
ISL70227SEHF/PROTO
-55 to +125
10 Ld Flatpack
K10.A
5962R1222301V9A
ISL70227SEHVX
-55 to +125
Die
ISL70227SEHX/SAMPLE
ISL70227SEHVX/SAMPLE
-55 to +125
Die
ISL70227MHEVAL1Z
Evaluation Board
NOTES:
1. These Intersil Pb-free Hermetic packaged products employ 100% Au plate - e4 termination finish, which is RoHS compliant and compatible with both
SnPb and Pb-free soldering operations.
2. Specifications for Rad Hard QML devices are controlled by the Defense Logistics Agency Land and Maritime (DLA). The SMD numbers listed in the
“Ordering Information” table must be used when ordering.
Pin Configuration
ISL70227SEH
(10 LD FLATPACK)
TOP VIEW
Pin Descriptions
PIN NUMBER
3
5
7
8
9
10
1
2
4, 6
PIN NAME
+IN A
V-
+IN B
-IN B
OUT B
V+
OUT A
-IN A
NC
OUTA
-IN A
+IN A
NC
V-
1 10
29
3 -+
8
4 +- 7
56
V+
OUT B
-IN B
+IN B
NC
EQUIVALENT CIRCUIT
Circuit 1
Circuit 3
Circuit 1
Circuit 1
Circuit 2
Circuit 3
Circuit 2
Circuit 1
-
DESCRIPTION
Amplifier A Non-inverting Input
Negative Power Supply
Amplifier B Non-inverting Input
Amplifier B Inverting Input
Amplifier B Output
Positive Power Supply
Amplifier A Output
Amplifier A Inverting Input
Not Connected – This pin is not electrically connected internally.
V+
IN- IN+
CIRCUIT 1
V-
V+
OUT
V-
CIRCUIT 2
V+
CAPACITIVELY
TRIGGERED ESD
CLAMP
V-
CIRCUIT 3
FN7958 Rev 3.00
July 18, 2014
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ISL70227SEH
Absolute Maximum Ratings
Maximum Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42V
Maximum Supply Voltage (LET = 86.4 MeVcm2/mg) . . . . . . . . . . . . . 36V
Maximum Differential Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Maximum Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . .0.5V
Min/Max Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . V- - 0.5V to V+ + 0.5V
Max/Min Input Current for
Input Voltage >V+ or <V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20mA
Output Short-Circuit Duration
(1 output at a Time) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Indefinite
ESD Tolerance
Human Body Model (Tested per MIL-PRF-883 3015.7). . . . . . . . . . . 2kV
Machine Model (Tested per JESD22-A115-A) . . . . . . . . . . . . . . . . . . 300V
Charged Device Model (Tested per CDM-22CI0ID) . . . . . . . . . . . . . . 750V
Di-electrically Isolated PR40 Process . . . . . . . . . . . . . . . . . . . Latch-up free
Thermal Information
Thermal Resistance (Typical)
JA (°C/W) JC (°C/W)
10 Ld Ceramic Flatpack (Notes 3, 4) . . . . .
130
20
Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493
Recommended Operating Conditions
Ambient Operating Temperature Range . . . . . . . . . . . . . .-55°C to +125°C
Maximum Operating Junction Temperature . . . . . . . . . . . . . . . . . .+150°C
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V (±2.25V) to 30V (±15V)
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
3. JA is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
4. For JC, the “case temp” location is the center of the ceramic on the package underside.
Electrical Specifications VS ±15V, VCM = 0, VO = 0V, RL = Open, TA = +25°C, unless otherwise noted. Boldface limits apply across
the operating temperature range, -55°C to +125°C.
PARAMETER
DESCRIPTION
CONDITIONS
MIN MAX
(Note 5) TYP (Note 5)
UNIT
VOS
TCVOS
IOS
Offset Voltage
Offset Voltage Drift
Input Offset Current
-75 -10 75
µV
-100
100 µV
-1 0.1 1 µV/°C
-10 1 10
nA
-12 12 nA
IB Input Bias Current
VCM Input Voltage Range
Guaranteed by CMRR
-10 1
-12
-13
-12
10
12
13
12
nA
nA
V
V
CMRR
Common-Mode Rejection Ratio
PSRR
Power Supply Rejection Ratio
AVOL
VOH
Open-Loop Gain
Output Voltage High
VCM = -13V to +13V
VCM = -12V to +12V
VS = ±2.25V to ±5V
VS = ±3V to ±15V
VO = -13V to +13V
RL = 10kΩ to ground
RL = 10kΩ to ground
115
115
110
110
1000
13.5
13.2
120
117
1500
13.65
dB
dB
dB
dB
V/mV
V
V
VOL Output Voltage Low
RL = 2kΩ to ground
RL = 10kΩ to ground
13.4
13.1
13.5
-13.65
-13.5
-13.2
V
V
V
V
RL = 2kΩ to ground
-13.5
-13.4
-13.1
V
V
FN7958 Rev 3.00
July 18, 2014
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ISL70227SEH
Electrical Specifications VS ±15V, VCM = 0, VO = 0V, RL = Open, TA = +25°C, unless otherwise noted. Boldface limits apply across
the operating temperature range, -55°C to +125°C. (Continued)
PARAMETER
DESCRIPTION
CONDITIONS
MIN MAX
(Note 5) TYP (Note 5)
UNIT
IS Supply Current/Amplifier
2.2 2.8
3.7
mA
mA
ISC Short-Circuit
VSUPPLY
Supply Voltage Range
AC SPECIFICATIONS
RL = 0Ωto ground
Guaranteed by PSRR
±2.25
±45
±15
mA
V
GBW
Gain Bandwidth Product
10 MHz
enp-p
en
en
en
en
in
Voltage Noise
Voltage Noise Density
Voltage Noise Density
Voltage Noise Density
Voltage Noise Density
Current Noise Density
0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
f = 10kHz
f = 10kHz
85 nVP-P
3 nV/Hz
2.8 nV/Hz
2.5 nV/Hz
2.5 nV/Hz
0.4 pA/Hz
THD + N
Total Harmonic Distortion + Noise
TRANSIENT RESPONSE
1kHz, G = 1, VO = 3.5VRMS,
RL = 2kΩ
0.00022
%
SR Slew Rate
AV = 10, RL = 2kΩVO = 4VP-P
±2.5
±2.0
±3.6
V/µs
V/µs
tr, tf, Small
Signal
Rise Time
10% to 90% of VOUT
AV = -1, VOUT = 100mVP-P,
Rf = Rg = 2kΩRL = 2kΩto VCM
36 100
100
ns
ns
Fall Time
90% to 10% of VOUT
AV = -1, VOUT = 100mVP-P,
Rf = Rg = 2kΩRL = 2kΩto VCM
38 100
100
ns
ns
ts Settling Time to 0.1%
10V Step; 10% to VOUT
AV = -1, VOUT = 10VP-P,
Rg = Rf = 10k, RL = 2kΩto VCM
Settling Time to 0.01%
10V Step; 10% to VOUT
AV = -1, VOUT = 10VP-P,
RL = 2kΩto VCM
tOL Output Overload Recovery Time AV = 100, VIN = 0.2V,
RL = 2kΩto VCM
OS+ Positive Overshoot
AV = 1, VOUT = 10VP-P, Rf = 0Ω
RL = 2kΩto VCM
3.4
3.8
1.7
20
35
µs
µs
µs
%
%
OS- Negative Overshoot
AV = 1, VOUT = 10VP-P, Rf = 0Ω
RL = 2kΩto VCM
20
35
%
%
FN7958 Rev 3.00
July 18, 2014
Page 4 of 18

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ISL70227SEH
Electrical Specifications VS ±15V, VCM = 0, VO = 0V, RL = Open, TA= +25°C, unless otherwise noted. Boldface limits apply across
a total ionizing dose of 100krad(Si) with exposure at a high dose rate of 50 - 300krad(Si)/s; and over a total ionizing dose of 50krad(Si) with
exposure at a low dose rate of <10mrad(Si)/s.
PARAMETER
DESCRIPTION
CONDITIONS
MIN MAX
(Note 5) TYP (Note 5)
UNIT
VOS Offset Voltage
-75 -10 75
-100
100
µV
µV
TCVOS
IOS
Offset Voltage Drift
Input Offset Current
-1 0.1 1 µV/°C
-10 1 10
nA
-25 25 nA
IB Input Bias Current
-10 1
-25
10
25
nA
nA
VCM Input Voltage Range
Guaranteed by CMRR
-13
-12
13 V
12 V
CMRR
Common-Mode Rejection Ratio
PSRR
Power Supply Rejection Ratio
AVOL
VOH
Open-Loop Gain
Output Voltage High
VCM = -13V to +13V
VCM = -12V to +12V
VS = ±2.25V to ±5V
VS = ±3V to ±15V
VO = -13V to +13V
RL = 10kΩ to ground
RL = 10kΩ to ground
115
115
110
110
1000
13.5
13.2
120
117
1500
13.65
dB
dB
dB
dB
V/mV
V
V
RL = 2kΩ to ground
13.4
13.1
13.5
V
V
VOL Output Voltage Low
RL = 10kΩ to ground
-13.65
-13.5
-13.2
V
V
RL = 2kΩ to ground
-13.5
-13.4
-13.1
V
V
IS Supply Current/Amplifier
2.2 2.8
3.7
mA
mA
ISC Short-Circuit
VSUPPLY
Supply Voltage Range
AC SPECIFICATIONS
RL = 0Ωto ground
Guaranteed by PSRR
±2.25
±45
±15
mA
V
GBW
Gain Bandwidth Product
10 MHz
enp-p
en
en
en
en
in
Voltage Noise
Voltage Noise Density
Voltage Noise Density
Voltage Noise Density
Voltage Noise Density
Current Noise Density
0.1Hz to 10Hz
f = 10Hz
f = 100Hz
f = 1kHz
f = 10kHz
f = 10kHz
85 nVP-P
3 nV/Hz
2.8 nV/Hz
2.5 nV/Hz
2.5 nV/Hz
0.4 pA/Hz
THD + N
Total Harmonic Distortion + Noise
1kHz, G = 1, VO = 3.5VRMS,
RL = 2kΩ
0.00022
%
FN7958 Rev 3.00
July 18, 2014
Page 5 of 18