AD546KN中文资料

VCM = ± 10 V TMIN to TMAX
RLOAD = 10 kΩ RLOAD = 2 kΩ Short Circuit Gain = +1
1013ʈ1 1015ʈ0.8
300 1000
300
300 800
300
100 250
100
80
200
80
± 20
–10
+10 –10
80
90
84
76
CONNECTION DIAGRAM 8-Pin Plastic
Mini-DIP Package
PRODUCT DESCRIPTION The AD546 is a monolithic electrometer combining the virtues of low (1 pA) input bias current with the cost effectiveness of a plastic mini-DIP package. Both input offset voltage and input offset voltage drift are laser trimmed, providing very high performance for such a low cost amplifier.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
元器件交易网
AD546–SPECIFICATIONS (@ +25؇C and ؎15 V dc, unless otherwise noted)
f = 0.1 Hz to 10 Hz
1.3
1.3
f = 1 kHz
0.4
0.4
INPUT IMPEDANCE Differential Common Mode
OPEN LOOP GAIN
TMIN–TMAX
TMIN–TMAX
INPUT VOLTAGE RANGE Differential3 Common-Mode Voltage Common-Mode Rejection Ratio
元器件交易网
a
FEATURES DC PERFORMANCE 1 mV max Input Offset Voltage Low Offset Drift: 20 ␮V/؇C 1 pA max Input Bias Current Input Bias Current Guaranteed Over Full
PRODUCT HIGHLIGHTS 1. The input bias current of the AD546 is specified, 100%
tested and guaranteed with the device in the fully warmed-up condition.
2. The input offset voltage of the AD546 is laser trimmed to less than 1 mV (AD546K).
80
76
–12
+12 –12
–10
+10 –10
15
20
35
15
4000
1013ʈ1 1015ʈ0.8
1000 800 250 200
± 20 +10
100 80
+12
+10
20
35
4000
Units
pA pA
pA pA pA
pA
pA mV µV/°C µV/V µV/V µV/Month µV p-p nV/√Hz nV/√Hz nV/√Hz nV/√Hz fA rms fA/√Hz
ΩʈpF ΩʈpF
V
V V dB dB
V V mA pF
–2–
REV. A
元器件交易网
AD546
Model
Conditions
AD546J
AD546K
Min Typ Max Min Typ Max Units
FREQUENCY RESPONSE Gain BW, Small Signal Full Power Response Slew Rate, Unity Gain Settling Time
Conditions
VCM = 0 V VCM = ± 10 V VCM = 0 V VCM = ± 10 V VCM = 0 V VCM = 0 V
TMIN–TMAX
AD546J
AD546K
Min Typ Max Min Typ Max
0.2 1 0.1 1
40 40 0.17
13
0.2
0.5
0.2
# of Transistors
± 15
؎5
؎18 ؎5
0.60 0.7
50
± 15
V
؎18 V
0.60 0.7 mA
50
PACKAGE OPTIONS Plastic Mini-DIP (N-8)
AD546JN
AD546KN
NOTES 1Bias current specifications are guaranteed maximum, at either input, after 5 minutes of operation at T A = +25°C. Bias current increases by a factor of 2.3 for every 10°C rise in temperature. 2Input offset voltage specifications are guaranteed after 5 minutes of operation at T A = +25°C. 3Defined as max continuous voltage between inputs, such that neither exceeds ± 10 V from ground.
APPLICATIONS Electrometer Amplifiers Photodiode Preamps pH Electrode Buffers Log Ratio Amplifiers
1 pA Monolithic Electrometer Operational Amplifier
AD546*
OUTPUT CHARACTERISTICS Voltage
Current Load Capacitance Stability
VDIFF = ± 1 V VCM = ± 10 V
VO = ± 10 V RLOAD = 10 kΩ VO = ± 10 V RLOAD = 10 kΩ VO = ± 10 V RLOAD = 2 kΩ VO = ± 10 V RLOAD = 2 kΩ
The AD546 is suitable for applications requiring both minimal levels of input bias current and low input offset voltage. Applications for the AD546 include use as a buffer amplifier for current output transducers such as photodiodes and pH probes. It may also be used as a precision integrator or as a low droop rate sample and hold amplifier. The AD546 is pin compatible with standard op amps; its plastic mini-DIP package is ideal for use with automatic insertion equipment.
Overload Recovery
G = –1 VO = 20 V p-p G = –1 to 0.1% to 0.01% 50% Overdrive Gain = –1
0.7 1.0
50
2
3
4.5
5
2
0.7
1.0
50
2
3
4.5
5
2
MHz kHz V/µs µs µs
µs
POWER SUPPLY Rated Performance Operating Range Quiescent Current Transistor Count
0.5
20 20 0.09
7
2 3 20 100 100 20
1 2 20 100 100 20
INPUT VOLTAGE NOISE
f = 0.1 Hz to 10 Hz
4
4
f = 10 Hz
90
90
f = 100 Hz
60
60
f = 1 kHz
35
35
f = 10 kHz
35
35
INPUT CURRENT NOISE
Model
INPUT BIAS CURRENT1 Either Input Either Input Either Input @ TMAX Either Input Offset Current Offset Current @ TMAX
INPUT OFFSET Initial Offset Offset @ TMAX vs. Temperature vs. Supply vs. Supply Long-Term Stability