AD8504 Analog Devices, AD8504 Datasheet

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AD8504

Manufacturer Part Number
AD8504
Description
1 µA Micropower CMOS Operational Amplifier
Manufacturer
Analog Devices
Datasheet

Specifications of AD8504

-3db Bandwidth
7kHz
Slew Rate
0.0040V/µs
Vos
500µV
Ib
1pA
# Opamps Per Pkg
4
Input Noise (nv/rthz)
190nV/rtHz
Vcc-vee
1.8V to 5.5V
Isy Per Amplifier
1µA
Packages
SOP

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8504ARUZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8504ARUZ-REEL
Manufacturer:
Multicomp
Quantity:
6 500
FEATURES
Supply current: 1 μA maximum/amplifier
Offset voltage: 3 mV maximum
Single-supply or dual-supply operation
Rail-to-rail input and output
No phase reversal
Unity gain stable
APPLICATIONS
Portable equipment
Remote sensors
Low power filters
Threshold detectors
Current sensing
GENERAL DESCRIPTION
The AD8502/AD8504 are low power, precision CMOS operational
amplifiers featuring a maximum supply current of 1 μA per
amplifier. The AD8502/AD8504 have a maximum offset voltage
of 3 mV and a typical input bias current of 1 pA operating rail-
to-rail on both the input and output. The AD8502/AD8504 can
operate from a single-supply voltage of +1.8 V to +5.5 V or a
dual-supply voltage of ±0.9 V to ±2.75 V.
With its low power consumption, low input bias current, and
rail-to-rail input and output, the AD8502/AD8504 are ideally
suited for a variety of battery-powered portable applications.
Potential applications include bedside monitors, pulse monitors,
glucose meters, smoke and fire detectors, vibration monitors,
and backup battery sensors.
The ability to swing rail-to-rail at both the input and output
helps maximize dynamic range and signal-to-noise ratio in
systems that operate at very low voltages. The low offset voltage
allows use of the AD8502/AD8504 in systems with high gain
Rev. A
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
without creating excessively large output offset errors. The
AD8502 and AD8504 offer an additional benefit by providing
high accuracy without the need for system calibration.
The AD8502/AD8504 are fully specified over the industrial
temperature range (−40°C to +85°C) and the extended indus-
trial temperature range (−40°C to +125°C). The AD8502 is
available in an 8-lead, SOT-23 surface-mount package. The
AD8504 is available in a 14-lead TSSOP surface-mount package.
Table 1. Low Supply Current Op Amps
Supply Current
Single
Dual
Quad
1 μA Micropower CMOS
Operational Amplifiers
OUT A
OUT B
–IN A
+IN A
+IN B
–IN B
OUT A
PIN CONFIGURATIONS
–IN A
+IN A
©2007–2009 Analog Devices, Inc. All rights reserved.
Figure 2. 14-Lead TSSOP (RU-14)
V+
V–
Figure 1. 8-Lead SOT-23
1
2
3
4
5
6
7
1 μA
AD8500
AD8502
AD8504
1
2
3
4
(Not to Scale)
(Not to Scale)
AD8502
TOP VIEW
AD8504
TOP VIEW
AD8502/AD8504
10 μA
ADA4505-2
ADA4505-4
8
7
6
5
14
13
12
11
10
9
8
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
OUT C
–IN C
www.analog.com
20 μA
AD8506
AD8508

Related parts for AD8504

AD8504 Summary of contents

Page 1

... The AD8502/AD8504 have a maximum offset voltage and a typical input bias current operating rail- to-rail on both the input and output. The AD8502/AD8504 can operate from a single-supply voltage dual-supply voltage of ±0 ±2.75 V. ...

Page 2

... AD8502/AD8504 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configurations ........................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 REVISION HISTORY 2/09—Rev Rev. A Changes to General Description Section ...................................... 1 Added Table 1; Renumbered Sequentially .................................... 1 Changes to Typical Performance Characteristics Section ........... 7 Updated Outline Dimensions ....................................................... 14 1/07—Revision 0: Initial Version Absolute Maximum Ratings ............................................................6 Thermal Resistance ...

Page 3

... T < +125° −40°C < T < +85°C A −40°C < T < +125° MΩ LOAD GBP Ø O Rev Page AD8502/AD8504 Min Typ Max 0 5 100 600 0 100 0 5 ...

Page 4

... AD8502/AD8504 Parameter NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density @ 25°C, unless otherwise noted Table 3. Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio ...

Page 5

... Peak-to-Peak Noise Voltage Noise Density Current Noise Density Symbol Conditions MΩ LOAD GBP Ø kHz kHz n Rev Page AD8502/AD8504 Min Typ Max Unit 0.004 V/μs 7 kHz 60 Degrees 6 μV p-p 190 nV/√Hz 0.1 pA/√Hz ...

Page 6

... AD8502/AD8504 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter Supply Voltage Input Voltage Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 7

... Figure 5. Input Offset Voltage vs. Common-Mode Voltage, V 1200 1800 2400 < 5.0 V Rev Page AD8502/AD8504 1000 100 10 1 0.1 0.01 0.001 –40 – TEMPERATURE (°C) Figure 6. Input Bias Current vs. Temperature (V S 1000 I (+125°C) ...

Page 8

... AD8502/AD8504 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 (V) S Figure 9. Supply Current vs. Supply Voltage 1.2 1 5.0V 0 1.8V SY 0.4 0.2 0 –40 –25 – TEMPERATURE (°C) Figure 10. Supply Current vs. Temperature 900 850 800 750 700 650 600 0 0.5 1.0 1.5 2.0 2.5 3.0 V (V) CM Figure 11. Supply Current vs. Input Common-Mode Voltage ...

Page 9

... Figure 19. Small Signal Transient Response (100 pF Load Capacitance –2 –1 1000 Figure 20. Large Signal Transient Response No Load Rev Page AD8502/AD8504 0 0.5 1.0 1.5 TIME (ms 0.5 1.0 1.5 TIME (ms ...

Page 10

... AD8502/AD8504 OUT TIME (40µs/DIV) Figure 21. Turn-On Transient Response OUT –1 –2 –3 –4 –0.005 –0.003 –0.001 0.001 0.003 TIME (s) Figure 22. No Phase Reversal –1 –2 –3 –4 –5 –4 – ...

Page 11

... V Figure 30. Supply Current vs. Input Common-Mode Voltage (+85° (–40°C) B 1.2 1.5 1.8 Figure 31. Output Saturation Voltage vs. Load Current 0.8 0.9 Figure 32. Output Saturation Voltage vs. Temperature 1 Rev Page AD8502/AD8504 700 650 600 550 500 0 0.3 0.6 0.9 1.2 V (V) CM 1000 100 SOURCE 10 1 0.1 0.01 0.001 ...

Page 12

... AD8502/AD8504 80 PHASE GAIN 0 –20 –40 –60 –80 10 100 1k FREQUENCY (Hz) Figure 33. Open-Loop Gain and Phase vs. Frequency, V 100 0.01 0.1 FREQUENCY (kHz) Figure 34. CMRR vs. Frequency, V 120 –30 –60 –90 –120 10k 100k = 1.8 V Figure 35. Small Signal Overshoot vs. Load Capacitance – ...

Page 13

... TIME (ms) Figure 38. Large Signal Transient Response (No Load), V –100 –110 –120 1 Rev Page AD8502/AD8504 0 1MΩ 1V p-p –10 10kΩ –20 – – – 10kΩ 10kΩ – AND D –50 –60 –70 – ...

Page 14

... COPLANARITY ORDERING GUIDE Model Temperature Range 1 AD8502ARJZ-R2 −40°C to +125°C AD8502ARJZ-REEL 1 −40°C to +125°C 1 AD8502ARJZ-REEL7 −40°C to +125°C AD8504ARUZ 1 −40°C to +125°C 1 AD8504ARUZ-REEL −40°C to +125° RoHS Compliant Part. 3.00 2.90 2. 3.00 2.80 2. 0.65 BSC 1.95 BSC ...

Page 15

... NOTES Rev Page AD8502/AD8504 ...

Page 16

... AD8502/AD8504 NOTES ©2007–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06323-0-2/09(A) Rev Page ...

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