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RR0 Amplifiers. AD8668 Datasheet

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RR0 Amplifiers. AD8668 Datasheet






AD8668 Amplifiers. Datasheet pdf. Equivalent




AD8668 Amplifiers. Datasheet pdf. Equivalent





Part

AD8668

Description

4 MHz RR0 Amplifiers



Feature


FEATURES Offset voltage: 2.5 mV max Low input bias current: 1 pA max Single-sup ply operation: 5 V to 16 V Dual-supply operation: ±2.5 V to ±8 V Low noise: 8 nV/√Hz @ 10 kHz Wide bandwidth: 4 M Hz Rail-to-rail output Unity-gain stabl e Lead-free packaging AD8666/AD8668 qua lified for automotive applications APPL ICATIONS Sensor amplification Reference buffers Medical equip.
Manufacture

Analog Devices

Datasheet
Download AD8668 Datasheet


Analog Devices AD8668

AD8668; ment Physiological measurements Signal f ilters and conditioning Consumer audio Photodiode amplification ADC driver Lev el shifting circuits GENERAL DESCRIPTIO N The AD866x family is single supply, r ail-to-rail output amplifiers with low noise performance featuring an extended operating range with supply voltages u p to 16 V. They also feature low input bias currents, wid.


Analog Devices AD8668

e signal bandwidth, and low input voltag e and current noise. For lower offset v oltage, choose the AD8661/AD8662/AD8664 family. The combination of low offsets , very low input bias currents, and wid e supply range make these amplifiers us eful in a wide variet .


Analog Devices AD8668

.

Part

AD8668

Description

4 MHz RR0 Amplifiers



Feature


FEATURES Offset voltage: 2.5 mV max Low input bias current: 1 pA max Single-sup ply operation: 5 V to 16 V Dual-supply operation: ±2.5 V to ±8 V Low noise: 8 nV/√Hz @ 10 kHz Wide bandwidth: 4 M Hz Rail-to-rail output Unity-gain stabl e Lead-free packaging AD8666/AD8668 qua lified for automotive applications APPL ICATIONS Sensor amplification Reference buffers Medical equip.
Manufacture

Analog Devices

Datasheet
Download AD8668 Datasheet




 AD8668
FEATURES
Offset voltage: 2.5 mV max
Low input bias current: 1 pA max
Single-supply operation: 5 V to 16 V
Dual-supply operation: ±2.5 V to ±8 V
Low noise: 8 nV/√Hz @ 10 kHz
Wide bandwidth: 4 MHz
Rail-to-rail output
Unity-gain stable
Lead-free packaging
AD8666/AD8668 qualified for automotive applications
APPLICATIONS
Sensor amplification
Reference buffers
Medical equipment
Physiological measurements
Signal filters and conditioning
Consumer audio
Photodiode amplification
ADC driver
Level shifting circuits
GENERAL DESCRIPTION
The AD866x family is single supply, rail-to-rail output
amplifiers with low noise performance featuring an extended
operating range with supply voltages up to 16 V. They also
feature low input bias currents, wide signal bandwidth, and low
input voltage and current noise. For lower offset voltage, choose
the AD8661/AD8662/AD8664 family.
The combination of low offsets, very low input bias currents,
and wide supply range make these amplifiers useful in a wide
variety of cost sensitive applications normally associated with
much higher priced JFET amplifiers. Systems using high
impedance sensors, such as photo diodes, benefit from the
combination of low input bias current, low noise, and low offset
and bandwidth. The wide operating voltage range matches high
performance ADCs and DACs. Audio applications and medical
monitoring equipment can take advantage of the high input
impedance, low voltage and current noise, wide bandwidth, and
the lack of popcorn noise found in many other low input bias
current amplifiers.
The AD866x family is specified over the extended industrial
temperature range (−40°C to +125°C). See the Ordering Guide
for automotive models.
16 V, 4 MHz RR0 Amplifiers
AD8665/AD8666/AD8668
PIN CONFIGURATIONS
OUT 1
5 V+
AD8665
V– 2 TOP VIEW
(Not to Scale)
+IN 3
4 –IN
Figure 1. AD8665, 5-Lead SOT-23 (RJ-5)
NC
–IN
+IN
VEE
1 8 NC
2 AD8665 7 VCC
3 TOP VIEW 6 OUT
4 (Not to Scale) 5 NC
NC = NO CONNECT
Figure 2. AD8665, 8-Lead SOIC_N (R-8)
OUT A
–IN A
+IN A
V–
1
2 AD8666
3 TOP VIEW
4 (Not to Scale)
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 3. AD8666, 8-Lead SOIC_N (R-8)
OUT A 1
8 V+
–IN A 2 AD8666 7 OUT B
+IN A 3 TOP VIEW 6 –IN B
V– 4 (Not to Scale) 5 +IN B
Figure 4. AD8666, 8-Lead MSOP (RM-8)
OUT A 1
IN A 2
+IN A 3
V+ 4
+IN B 5
–IN B 6
OUT B 7
AD8668
TOP VIEW
(Not to Scale)
14 OUT D
13 –IN D
12 +IN D
11 V–
10 +IN C
9 –IN C
8 OUT C
Figure 5. AD8668, 14-Lead TSSOP (RU-14)
OUT A
–IN A
+IN A
V+
+IN B
–IN B
OUT B
1 14 OUT D
2 13 –IN D
3 AD86468 12 +IN D
4 TOP VIEW 11 V–
5 (Not to Scale) 10 +IN C
6 9 –IN C
7 8 OUT C
Figure 6. AD8668, 14-Lead SOIC_N (R-14)
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2006–2011 Analog Devices, Inc. All rights reserved.




 AD8668
AD8665/AD8666/AD8668
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Pin Configurations ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
REVISION HISTORY
7/11—Rev. A to Rev. B
Change to Features and General Description Sections ............... 1
Updated Outline Dimensions ....................................................... 12
Changes to Ordering Guide .......................................................... 13
Added Automotive Products Section........................................... 13
10/06—Rev. 0 to Rev. A
Added AD8665 ...................................................................Universal
Added New Figure 1 and Figure 2,
Renumbered Sequentially................................................................ 1
Changes to Table 4............................................................................ 5
Changes to Figure 8, Figure 9, and Figure 11 ............................... 6
Change to Figure 40 ....................................................................... 11
Updated Outline Dimensions ....................................................... 12
Changes to Ordering Guide .......................................................... 13
4/06—Rev 0: Initial Version
Absolute Maximum Ratings ............................................................5
Thermal Resistance .......................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Outline Dimensions ....................................................................... 12
Ordering Guide .......................................................................... 14
Rev. B | Page 2 of 16




 AD8668
SPECIFICATIONS
VDD = 5.0 V, VCM = VDD/2, TA = 25oC, unless otherwise noted.
Table 1.
Parameter
INPUT CHARACTERISTICS
Offset Voltage
Offset Voltage Drift
Input Bias Current
Input Offset Current
Input Voltage Range
Common-Mode Rejection Ratio
Large-Signal Voltage Gain
OUTPUT CHARACTERISTICS
Output Voltage High
Output Voltage Low
Short-Circuit Output Current
Closed-Loop Output Impedance
POWER SUPPLY
Power Supply Rejection Ratio
Supply Current per Amplifier
DYNAMIC PERFORMANCE
Slew Rate
Gain Bandwidth Product
Phase Margin
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
Channel Separation
Symbol
VOS
ΔVOS/ΔT
IB
IOS
VCM
CMRR
AVO
VOH
VOL
ISC
ZOUT
PSRR
ISY
SR
GBP
ΦM
en p-p
en
CS
Conditions
VCM = 2.5 V
VCM = −0.1 V to +3.0 V
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C
−40°C < TA < +125°C
VCM = −0.1 V to +3.0 V
−40°C < TA < +125°C
RL = 2 kΩ, VO = 0.5 V to 4.5 V
IOUT = 1 mA
−40°C < TA < +125°C
IOUT = 1 mA
−40°C < TA < +125°C
At 1 MHz, AV = 1
VDD = 5.0 V to 16 V
−40°C < TA < +125°C
−40°C < TA < +125°C
RL = 2 kΩ
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 10 kHz
AD8665/AD8666/AD8668
Min Typ
Max Unit
0.7
3.0
0.2
0.1
−0.1
84 100
79
68 145
2.5 mV
3.0 mV
5.0 mV
10 μV/°C
1 pA
550 pA
0.5 pA
70 pA
+3.0 V
dB
dB
V/mV
4.88 4.93
V
4.86 V
50 85 mV
105 mV
±19 mA
50 Ω
98 115
dB
94 dB
1.1 1.4 mA
2.0 mA
3.5 V/μs
4 MHz
70 Degrees
2.4
10
8
−115
μV p-p
nV/√Hz
nV/√Hz
dB
Rev. B | Page 3 of 16



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