AD8512 Analog Devices, AD8512 Datasheet

no-image

AD8512

Manufacturer Part Number
AD8512
Description
Low Noise, Low Input Bias Current, Wide Bandwidth Precision JFET Dual Op Amp
Manufacturer
Analog Devices
Datasheet

Specifications of AD8512

-3db Bandwidth
8MHz
Slew Rate
20V/µs
Vos
80µV
Ib
21pA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
7.6nV/rtHz
Vcc-vee
9V to 36V
Isy Per Amplifier
2.5mA
Packages
SOIC,SOP

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8512
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8512A
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8512AR
Manufacturer:
ADI
Quantity:
8
Part Number:
AD8512AR
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8512ARM
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8512ARMZ
Manufacturer:
Analog Devices Inc
Quantity:
31 208
Part Number:
AD8512ARMZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8512ARMZ-REEL
Manufacturer:
Maxim
Quantity:
28
Part Number:
AD8512ARMZREEL
Manufacturer:
ATMEL
Quantity:
3 933
Part Number:
AD8512ARZ-REEL7
Manufacturer:
ADI
Quantity:
5 000
Part Number:
AD8512BRZ
Manufacturer:
AD
Quantity:
60
FEATURES
Fast settling time: 500 ns to 0.1%
Low offset voltage: 400 μV maximum
Low T
Low input bias current: 25 pA typical at V
Dual-supply operation: ±5 V to ±15 V
Low noise: 8 nV/√Hz typical at f = 1 kHz
Low distortion: 0.0005%
No phase reversal
Unity gain stable
APPLICATIONS
Instrumentation
Multipole filters
Precision current measurement
Photodiode amplifiers
Sensors
Audio
GENERAL DESCRIPTION
The AD8510/AD8512/AD8513 are single-, dual-, and quad-
precision JFET amplifiers that feature low offset voltage, input
bias current, input voltage noise, and input current noise.
The combination of low offsets, low noise, and very low input
bias currents makes these amplifiers especially suitable for high
impedance sensor amplification and precise current measurements
using shunts. The combination of dc precision, low noise, and
fast settling time results in superior accuracy in medical
instruments, electronic measurement, and automated test
equipment. Unlike many competitive amplifiers, the AD8510/
AD8512/AD8513 maintain their fast settling performance even
with substantial capacitive loads. Unlike many older JFET
amplifiers, the AD8510/AD8512/AD8513 do not suffer from
output phase reversal when input voltages exceed the maximum
common-mode voltage range.
Rev. I
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
C
V
OS
: 1 μV/°C typical
S
= ±15 V
Precision, Very Low Noise, Low Input Bias Current,
Wide Bandwidth JFET Operational Amplifiers
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Fast slew rate and great stability with capacitive loads make the
AD8510/AD8512/AD8513 a perfect fit for high performance
filters. Low input bias currents, low offset, and low noise result
in a wide dynamic range of photodiode amplifier circuits. Low
noise and distortion, high output current, and excellent speed
make the AD8510/AD8512/AD8513 great choices for audio
applications.
The AD8510/AD8512 are both available in 8-lead narrow SOIC_N
and 8-lead MSOP packages. MSOP-packaged parts are only
available in tape and reel. The AD8513 is available in 14-lead
SOIC_N and TSSOP packages.
The AD8510/AD8512/AD8513 are specified over the −40°C to
+125°C extended industrial temperature range.
OUT B
OUT A
OUT A
Figure 5. 14-Lead SOIC_N (R Suffix)
Figure 1. 8-Lead MSOP (RM Suffix)
Figure 3. 8-Lead MSOP (RM Suffix)
NULL
+IN A
+IN B
–IN B
–IN A
–IN A
+IN A
–IN
+IN
V+
V–
V–
1
2
3
4
5
6
7
NC = NO CONNECT
1
2
3
4
1
2
3
4
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8513
TOP VIEW
AD8510
TOP VIEW
AD8512
TOP VIEW
AD8510/AD8512/AD8513
PIN CONFIGURATIONS
©2002–2009 Analog Devices, Inc. All rights reserved.
14
13
12
10
11
5
5
9
8
8
7
6
8
7
6
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
V+
OUT
NULL
V+
OUT B
–IN B
+IN B
OUT B
OUT A
Figure 6. 14-Lead TSSOP (RU Suffix)
OUT A
NULL
Figure 2. 8-Lead SOIC_N (R Suffix)
Figure 4. 8-Lead SOIC_N (R Suffix)
+IN B
–IN B
–IN A
+IN A
–IN A
+IN A
+IN
–IN
V–
V+
V–
1
2
3
4
NC = NO CONNECT
1
2
3
4
5
6
7
1
2
3
4
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8510
TOP VIEW
AD8513
TOP VIEW
AD8512
TOP VIEW
www.analog.com
14
13
12
11
10
8
7
6
5
9
8
8
7
6
5
OUT
NULL
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
NC
V+
V+
OUT B
–IN B
+IN B

Related parts for AD8512

AD8512 Summary of contents

Page 1

... AD8510/AD8512/AD8513 great choices for audio applications. The AD8510/AD8512 are both available in 8-lead narrow SOIC_N and 8-lead MSOP packages. MSOP-packaged parts are only available in tape and reel. The AD8513 is available in 14-lead SOIC_N and TSSOP packages. The AD8510/AD8512/AD8513 are specified over the − ...

Page 2

... AD8510/AD8512/AD8513 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 4 Absolute Maximum Ratings ............................................................ 6 ESD Caution .................................................................................. 6 Typical Performance Characteristics ............................................. 7 General Application Information ................................................. 13 Input Overvoltage Protection ................................................... 13 REVISION HISTORY 2/09—Rev Rev. I Changes to Figure 25 ...................................................................... 10 Changes to Ordering Guide .......................................................... 20 10/07—Rev Rev. H Changes to Crosstalk Section ...

Page 3

... AD8513 DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time Total Harmonic Distortion (THD) + Noise Phase Margin NOISE PERFORMANCE Voltage Noise Density Peak-to-Peak Voltage Noise 1 AD8510/AD8512 only. Symbol Conditions V OS −40°C < T < +125° −40°C < T < +125°C ...

Page 4

... Output Voltage High Output Voltage Low Output Voltage High Output Voltage Low Output Current POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier AD8510/AD8512/AD8513 AD8510/AD8512 AD8513 DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Settling Time Total Harmonic Distortion (THD) + Noise Phase Margin Symbol ...

Page 5

... Parameter NOISE PERFORMANCE Voltage Noise Density Peak-to-Peak Voltage Noise 1 AD8510/AD8512 only. Symbol Conditions 100 kHz kHz e p-p 0 bandwidth n Rev Page AD8510/AD8512/AD8513 Min Typ Max Unit 34 nV/√Hz 12 nV/√Hz 8.0 10 nV/√Hz 7.6 nV/√Hz 2.4 5.2 μV p-p ...

Page 6

... AD8510/AD8512/AD8513 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 10 sec) Electrostatic Discharge (Human Body Model) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 7

... INPUT OFFSET VOLTAGE (mV) Figure 7. Input Offset Voltage Distribution (µV/° Figure 8. AD8510/AD8512 (µV/° Figure 9. AD8510/AD8512 0.2 0.3 0.4 ...

Page 8

... AD8510/AD8512/AD8513 2 25°C A 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 SUPPLY VOLTAGE (V+ – V–) Figure 13. AD8512 Supply Current per Amplifier vs. Supply Voltage ± LOAD CURRENT (mA) Figure 14. AD8510/AD8512 Output Voltage vs. Load Current 2.50 2.25 2.00 ±15V 1.75 ±5V 1.50 1.25 1.00 –40 – ...

Page 9

... V = ±15V SY 100 10M 100M = ±5V, ±15V SY 100M 10M Rev Page AD8510/AD8512/AD8513 V = ±15V 50mV 100 10k 100k 1M 10M FREQUENCY (Hz) Figure 22. Output Impedance vs. Frequency V = ±5V TO ±15V SY 10 100 ...

Page 10

... AD8510/AD8512/AD8513 280 245 210 175 140 105 FREQUENCY (Hz) Figure 25. Voltage Noise Density vs. Frequency V = ±15V 2kΩ 100pF TIME (1µs/DIV) Figure 26. Large-Signal Transient Response V = ±15V 2kΩ 100pF TIME (100ns/DIV) Figure 27 ...

Page 11

... Figure 35. Small-Signal Overshoot vs. Load Capacitance 100 Rev Page AD8510/AD8512/AD8513 = ±5V = 2kΩ = 100pF = 1 TIME (100ns/DIV) Figure 34. Small-Signal Transient Response V = ± 2kΩ L +OS –OS 10 100 1k LOAD CAPACITANCE (pF ±15V ...

Page 12

... AD8510/AD8512/AD8513 120 100 (µV/° Figure 37. AD8513 T V Distribution 25°C A 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1 SUPPLY VOLTAGE (V+ – V–) Figure 38. AD8513 Supply Current per Amplifier vs. Supply Voltage V = ± Rev Page ±15V ...

Page 13

... T is the ambient temperature in Kelvin (T = 273 + °C). For R < 3.9 kΩ the AD8510/AD8512/AD8513 is so low that its total density does not become a significant term unless R 165 MΩ, an impractical value for most applications. The total equivalent rms noise over a specific bandwidth is expressed as ...

Page 14

... Figure 43. Positive Overload Recovery The negative overdrive recovery time shown in Figure 44 is less than 200 ns. In addition to the fast recovery time, the AD8510/AD8512/ AD8513 show excellent symmetry of the positive and negative recovery times. This is an important feature for transient signal rectification because the output signal is kept equally undistorted throughout any given period ...

Page 15

... Figure 46 shows a scope plot of the output of the AD8510/AD8512/ AD8513 in response to a 400 mV pulse. The circuit is configured in positive unity gain (worst case) with a load experience of 500 pF ±15V 500pF L R =10kΩ L TIME (1µs/DIV) Figure 46. Capacitive Load Drive Without Snubber When the snubber circuit is used, the overshoot is reduced from 55% to less than 3% with the same load capacitance ...

Page 16

... V This delays the output signal because the amplifier requires time to enter its linear region. Although the AD8510/AD8512/AD8513 have a very fast overdrive recovery time, which makes them great choices for the rectification of transient signals, the symmetry of the positive and negative recovery times is also important to keep the output signal undistorted ...

Page 17

... CC The AD8510/AD8512/AD8513 make excellent voltage comparators. In addition to a high slew rate, the AD8510/ AD8512/AD8513 have a very fast saturation recovery time. In the absence of feedback, the amplifiers are in open-loop mode (very high gain). In this mode of operation, they spend much of their time in saturation. ...

Page 18

... Figure 57. Channel Separation The AD8510 single has two additional active terminals that are not present on the AD8512 dual or AD8513 quad parts. These pins are labeled “null” and are used for fine adjustment of the input offset voltage. Although the guaranteed maximum offset voltage at room temperature is 400 μ ...

Page 19

... Dimensions shown in millimeters 4.50 4.40 4.30 0.50 (0.0196) 45° 0.25 (0.0099) 8° PIN 1 0° 1.05 1.27 (0.0500) 1.00 0.40 (0.0157) 0.80 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.80 0.10 8° 0.60 0° 0.40 Rev Page AD8510/AD8512/AD8513 5.10 5.00 4. 6.40 BSC 1 7 0.65 BSC 0.20 1.20 0.09 MAX 8° 0.15 0.30 0° SEATING 0.05 0.19 COPLANARITY PLANE 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 61. 14-Lead Thin Shrink Small Outline Package [TSSOP] ...

Page 20

... AD8512ARZ −40°C to +125°C 1 AD8512ARZ-REEL −40°C to +125°C 1 AD8512ARZ-REEL7 −40°C to +125°C AD8512BR −40°C to +125°C AD8512BR-REEL −40°C to +125°C AD8512BR-REEL7 −40°C to +125°C AD8512BRZ 1 −40°C to +125°C 1 AD8512BRZ-REEL −40°C to +125°C 1 AD8512BRZ-REEL7 − ...

Related keywords