AD8505ARJZ-RL Analog Devices Inc, AD8505ARJZ-RL Datasheet

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AD8505ARJZ-RL

Manufacturer Part Number
AD8505ARJZ-RL
Description
Single Micro-Power Amplifier
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8505ARJZ-RL

Amplifier Type
General Purpose
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
0.013 V/µs
Gain Bandwidth Product
95kHz
Current - Input Bias
1pA
Voltage - Input Offset
500µV
Current - Supply
15µA
Current - Output / Channel
45mA
Voltage - Supply, Single/dual (±)
1.8 V ~ 5 V, ±0.9 V ~ 2.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-5, SC-74A, SOT-25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
-3db Bandwidth
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
PSRR: 100 dB minimum
CMRR: 105 dB typical
Very low supply current: 20 μA per amplifier maximum
1.8 V to 5 V single supply or ±0.9 V to ±2.5 V dual supply
Rail-to-rail input/output
Low noise: 45 nV/√Hz at 1 kHz
2.5 mV offset voltage maximum
Very low input bias current: 1 pA typical
APPLICATIONS
Pressure and position sensors
Remote security
Bio sensors
IR thermometers
Battery-powered consumer equipment
Hazard detectors
GENERAL DESCRIPTION
The AD8505/AD8506/AD8508 are single, dual, and quad micro-
power amplifiers featuring rail-to-rail input/output swings while
operating from a single 1.8 V to 5 V power supply or from dual
±0.9 V to ±2.5 V power supplies. Using a new circuit technology,
these amplifiers offer zero input crossover distortion (excellent
PSRR and CMRR performance) and low bias current while
operating with a supply current of less than 20 μA per amplifier.
This amplifier family offers the lowest noise in its power class.
This combination of features makes the AD8505/AD8506/AD8508
amplifiers ideal choices for battery-powered applications because
they minimize errors due to power supply voltage variations over
the lifetime of the battery and maintain high CMRR even for a rail-
to-rail input op amp. Remote battery-powered sensors, handheld
instrumentation, consumer equipment, hazard detection (for
example, smoke, fire, and gas), and patient monitors can benefit
from the features of the AD8505/AD8506/AD8508 amplifiers.
The AD8505/AD8506/AD8508 are specified for both the industrial
temperature range of −40°C to +85°C and the extended industrial
temperature range of −40°C to +125°C. The AD8505 single ampli-
fier is available in a tiny 5-lead SOT-23 and a 6-ball WLCSP
packages. The AD8506 dual amplifier is available in 8-lead MSOP
and 8-ball WLCSP packages. The AD8508 quad amplifier is
available in 14-lead TSSOP and 14-ball WLCSP packages. The
AD8505/AD8506/AD8508 are members of a growing series of
zero crossover distortion op amps offered by Analog Devices,
Inc., including the ADA4505-1/ADA4505-2/ADA4505-4, that
operate from a single 1.8 V to 5 V supply or from dual ±0.9 V to
±2.5 V power supplies.
Rev. E
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.
Zero Input Crossover Distortion Amplifiers
20 μA Maximum, Rail-to-Rail I/O,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
OUT B
OUT A
OUT A
+IN B
+IN A
–IN B
–IN A
–IN A
+IN A
Figure 5. 14-Lead TSSOP (RU-14)
OUT
Figure 1. 5-Lead SOT-23 (RJ-5)
Figure 3. 8-Lead MSOP (RM-8)
V+
+IN
V–
V–
1
2
3
4
1
2
3
4
5
6
7
1
2
3
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8506
TOP VIEW
AD8508
AD8505/AD8506/AD8508
AD8505
TOP VIEW
TOP VIEW
PIN CONFIGURATIONS
©2007–2010 Analog Devices, Inc. All rights reserved.
14
13
12
10
5
4
8
7
6
5
11
9
8
V+
–IN
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
Figure 6. 14-Ball WLCSP (CB-14-1)
Figure 2. 6-Ball WLCSP (CB-6-7)
Figure 4. 8-Ball WLCSP (CB-8-2)
BALL A1
CORNER
OUT B
BALL A1
CORNER
(BALL SIDE DOWN)
OUTD
NC = NO CONNECT
–IN B
+IN B
–IND
+INC
–INC
(BALL SIDE DOWN)
A1
D1
B1
E1
A1
B1
C1
BALL A1
INDICATOR
(BALL SIDE DOWN)
Not to Scale
OUT
+IN
AD8505
TOP VIEW
V–
Not to Scale
+IND
A1
B1
C1
C1
TOP VIEW
AD8506
Not to Scale
AD8508
TOP VIEW
www.analog.com
OUTA
OUTC
V+
A2
V–
C2
A2
V–
B2
V+
D2
E2
–IN
NC
V+
A2
B2
C2
+INB
C3
OUT A
+IN A
–IN A
A3
B3
C3
OUTB
–INA
+INA
–INB
A3
B3
D3
E3

Related parts for AD8505ARJZ-RL

AD8505ARJZ-RL Summary of contents

Page 1

FEATURES PSRR: 100 dB minimum CMRR: 105 dB typical Very low supply current: 20 μA per amplifier maximum 1 single supply or ±0 ±2.5 V dual supply Rail-to-rail input/output Low noise: 45 nV/√Hz at ...

Page 2

AD8505/AD8506/AD8508 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—1.8 V Operation ............................ 3 Electrical Characteristics—5 V Operation................................ 4 Absolute Maximum Ratings ............................................................ ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS—1.8 V OPERATION 25° Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection ...

Page 4

AD8505/AD8506/AD8508 ELECTRICAL CHARACTERISTICS—5 V OPERATION / 25° 100 kΩ to GND, unless otherwise noted Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage 1 Input Current 2 Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) 1 Input pins have ...

Page 6

AD8505/AD8506/AD8508 TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted. A 250 200 150 100 50 0 –4 –3 –2 – (mV) OS Figure 7. Input Offset Voltage Distribution ...

Page 7

T = 25°C, unless otherwise noted. A –115 –120 –125 –130 –135 –140 0 0.2 0.4 0.6 0.8 1.0 V (V) CM Figure 13. Input Offset Voltage vs. Input Common-Mode Voltage 600 550 500 450 400 350 300 250 200 ...

Page 8

AD8505/AD8506/AD8508 T = 25°C, unless otherwise noted. A 10k 100 V – 0.1 0.001 0.01 0.1 LOAD CURRENT (mA) Figure 19. Output Voltage to Supply Rail vs. Load Current 14 ...

Page 9

T = 25°C, unless otherwise noted. A 120 100 PHASE GAIN 20 0 –20 GAIN 0pF –40 L PHASE 0pF L –60 GAIN 50pF L PHASE 50pF –80 L ...

Page 10

AD8505/AD8506/AD8508 T = 25°C, unless otherwise noted. A 100 100 1k 10k FREQUENCY (Hz) Figure 31. CMRR vs. Frequency 100 PSRR– 100 ...

Page 11

T = 25°C, unless otherwise noted. A TIME (100µs/DIV) Figure 37. Large-Signal Transient Response TIME (100µs/DIV) Figure 38. Small-Signal Transient Response TIME (4s/DIV) Figure 39. Input Voltage Noise 0 1. 100kΩ ...

Page 12

AD8505/AD8506/AD8508 T = 25°C, unless otherwise noted. A –40 100kΩ –50 10kΩ –60 –70 –80 –90 –100 –110 –120 100 1k FREQUENCY (Hz) Figure 43. Channel Separation vs. Frequency 1.5V p-p IN 10k 100k ...

Page 13

THEORY OF OPERATION The AD8505/AD8506/AD8508 are unity-gain, stable, CMOS, rail- to-rail input/output operational amplifiers designed to optimize performance in current consumption, PSRR, CMRR, and zero crossover distortion, all embedded in a small package. The typical offset voltage is 500 μV, ...

Page 14

AD8505/AD8506/AD8508 The charge pump has been carefully designed so that switching noise components at any frequency, both within and beyond the amplifier bandwidth, are much lower than the thermal noise floor. Therefore, the spurious-free dynamic range (SFDR) is limited only ...

Page 15

APPLICATIONS INFORMATION PULSE OXIMETER CURRENT SOURCE A pulse oximeter is a noninvasive medical device used for con- tinuously measuring the percentage of hemoglobin (Hb) saturated with oxygen and the pulse rate of a patient. Hemoglobin that is carrying oxygen (oxyhemoglobin) ...

Page 16

AD8505/AD8506/AD8508 FOUR-POLE, LOW-PASS BUTTERWORTH FILTER FOR GLUCOSE MONITOR There are several methods of glucose monitoring: spectroscopic absorption of infrared light in the 2 μm to 2.5 μm range, reflec- tance spectrophotometry, and the amperometric type using electrochemical strips with glucose ...

Page 17

OUTLINE DIMENSIONS 1.70 1.60 1.50 1.30 1.15 0.90 0.15 MAX 0.05 MIN 0.945 0.905 0.865 BALL A1 IDENTIFIER TOP VIEW (BALL SIDE DOWN) 3.00 2.90 2. 3.00 2.80 2. 0.95 BSC 1.90 BSC 0.20 MAX ...

Page 18

AD8505/AD8506/AD8508 IDENTIFIER 1.460 1.420 SQ 1.380 BALL 1 IDENTIFIER TOP VIEW 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 1 2.80 4 PIN 1 0.65 BSC 0.95 15° MAX 0.85 1.10 MAX 0.75 0.15 0.23 6° 0.40 0.05 ...

Page 19

PIN 1 0.65 BSC 1.05 1.00 0.80 0.15 0.05 0.30 COPLANARITY 0.19 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB-1 Figure 55. 14-Lead Thin Shrink Small Outline Package [TSSOP] 1.50 1.46 1.42 BALL 1 ...

Page 20

... AD8505/AD8506/AD8508 ORDERING GUIDE 1 Model Temperature Range AD8505ARJZ-R2 −40°C to +125°C AD8505ARJZ-R7 −40°C to +125°C AD8505ARJZ-RL −40°C to +125°C AD8505ACBZ-R7 −40°C to +125°C AD8505ACBZ-RL −40°C to +125°C AD8506ACBZ-REEL −40°C to +125°C AD8506ACBZ-REEL7 −40°C to +125°C AD8506ARMZ − ...

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