AD8502ARJZ Analog Devices Inc, AD8502ARJZ Datasheet

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AD8502ARJZ

Manufacturer Part Number
AD8502ARJZ
Description
OP AMP, DUAL 1UA CMOS, SMD, SOT238
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8502ARJZ

Op Amp Type
Low Power
No. Of Amplifiers
2
Bandwidth
7kHz
Slew Rate
0.004V/µs
Supply Voltage Range
± 0.9V To ± 2.75V
Amplifier Case Style
SOT-23
No. Of Pins
8
Operating Temperature
RoHS Compliant

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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. 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.
Rev. 0
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
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
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.
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
Figure 2. 14-Lead TSSOP (RU-14)
V+
V–
Figure 1. 8-Lead SOT-23
1
2
3
4
5
6
7
1
2
3
4
©2007 Analog Devices, Inc. All rights reserved.
(Not to Scale)
(Not to Scale)
AD8502
TOP VIEW
AD8504
TOP VIEW
AD8502/AD8504
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

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AD8502ARJZ Summary of contents

Page 1

FEATURES Supply current: 1 μA maximum/amplifier Offset voltage 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 ...

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 1/07—Revision 0: Initial Version Absolute Maximum Ratings ............................................................6 Thermal Resistance .......................................................................6 ESD ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS @ / 25°C, unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage Drift Input Bias Current Input Offset Current Input Voltage ...

Page 4

AD8502/AD8504 Parameter NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density @ 25°C, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Offset Voltage ...

Page 5

Parameter DYNAMIC PERFORMANCE Slew Rate Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Current Noise Density Symbol Conditions MΩ LOAD GBP Ø ...

Page 6

AD8502/AD8504 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. 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) ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 160 140 120 100 –2400 –1800 –1200 –600 0 600 V (µV) OS Figure 3. Input Offset Voltage Distribution (0 V < V 200 150 100 ...

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. Input Common-Mode Voltage 1.2 1 5.0V 0 1.8V SY 0.4 ...

Page 9

FREQUENCY (kHz) Figure 15. CMRR vs. Frequency 100 0.01 0.1 1 FREQUENCY ...

Page 10

AD8502/AD8504 OUT TIME (s) 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 ...

Page 11

V (V) CM Figure 27. Input Offset Voltage vs. Input Common-Mode Voltage, V 1000 I (+125°C) B 100 (+25°C) B 0.1 0.01 ...

Page 12

AD8502/AD8504 –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 ...

Page 13

TIME (ms) Figure 37. Small Signal Transient Response (100 pF Load Capacitance 1 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 ...

Page 14

... Figure 40. 8-Lead Small Outline Transistor Package [SOT-23] (RJ-8) Dimensions shown in millimeters ORDERING GUIDE Model Temperature Range 1 AD8502ARJZ-R2 −40°C to +125°C 1 AD8502ARJZ-REEL −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° Pb-free part. 14 4.50 4.40 4 ...

Page 15

NOTES Rev Page AD8502/AD8504 ...

Page 16

AD8502/AD8504 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06323-0-1/07(0) Rev Page ...

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