AD85052 データシートの表示（PDF） - Analog Devices
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AD85052 Datasheet PDF : 58 Pages
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Precision Amplifiers (VOS < 1 mV, Bandwidth < 50 MHz)
Overvoltage Protection (OVP) Amplifiers
ADA4091-2/ADA4091-4: Micropower, OVP, Rail-to-Rail Input/Output Operational Amplifier
The ADA4091-2 dual and ADA4091-4 quad are micropower, single-supply, 1.2 MHz bandwidth amplifiers featuring rail-to-rail inputs and outputs. They are
guaranteed to operate from a +2.7 V to +30 V single supply, as well as from ±1.35 V to ±15 V dual supplies. The ADA4091 family features a unique input
stage that allows the input voltage to exceed either supply safely without any phase reversal or latch-up; this is called overvoltage protection, or OVP.
Features
• Single-supply operation: 2.7 V to 36 V
• Rail-to-rail output swing
• Low supply current: 200 mA/amplifier
• Wide bandwidth: 1.2 MHz
• Low offset voltage: 250 mV maximum
• No phase reversal
• Overvoltage protection (OVP)
• 25 V above/below supply rails at 65 V
• 12 V above/below supply rails at 615 V
Applications
• Industrial process control
• Battery-powered instrumentation
• Power supply control and protection
• Telecommunications
• Remote sensors
• Low voltage strain gage amplifiers
• DAC output amplifiers
VDD
+30V
RBIAS 12k
ADR512 10nF
U1A
VDD
+30V
1/2
V1
ADA4091-2
R2
R1
1k ± 1% 22.1k ± 1%
SERIAL
INTERFACE
VDD +30V
AD5292
20k
VSS
U1B
2/2
ADA4091-2
VOUT
Circuit Note CN-0111, Low Cost, High Voltage, Unipolar DAU Reference Circuit,
www.analog.com/CN0111.
Overvoltage Protection (OVP) Amplifiers
Process
Part
Number
No. of
Amps
Supply
Voltage
(Min/Max)
Rail-to-Rail1
BW @
ACL Min
(MHz)
Slew
Rate
(V/ms)
VOS Max
(mV)
TcVOS
(mv/°C Typ)
CMRR
Min
(dB)
PSRR
Min
(dB)
AVO
Min
(dB)
Noise
(nV/√Hz)
@ 1 kHz
IS/Amp
(mA Max)
OVP
Level
(V)
Packaging
Price
@ 1k
(OEM $US)
OP191 1
Bipolar OP291 2
2.7/12
RRIO
OP491 4
Bipolar
ADA4091-2
ADA4091-4
2
4
61.35/618
RRIO
Bipolar ADA4092-4 4 61.35/618 RRIO
1.5 0.5
0.5
1.27 0.46 0.25
1.4 0.4
1.5
10
SOIC
1.69
1.1
75 80 88 42
0.420 10
SOIC
2.22
25 SOIC/TSSOP/PDIP 3.60
2.5
104 108 116 25
0.250
12
SOIC/LFCSP
LFCSP/TSSOP
2.22
3.50
2.5
90 98 116 30
0.250 12
TSSOP
2.50
1 RRIO: rail-to-rail input/output, RRO: rail-to-rail output, SS: single supply (IVR includes –VSY).
www.analog.com/opamps | 17
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