AD8628AUJ-REEL7 Analog Devices Inc, AD8628AUJ-REEL7 Datasheet

IC OPAMP CHOPPER R-R TSOT23-5

AD8628AUJ-REEL7

Manufacturer Part Number
AD8628AUJ-REEL7
Description
IC OPAMP CHOPPER R-R TSOT23-5
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8628AUJ-REEL7

Rohs Status
RoHS non-compliant
Design Resources
Precision, Unipolar, Inverting Conversion Using AD5546/56 DAC (CN0022) Precision, Unipolar, Inverting Conversion Using AD5547/57 DAC (CN0026) Precision, Unipolar, Noninverting Configuration for the AD5547/57 DAC (CN0027) Precision, Unipolar, Noninverting Configuration for the AD5546/56 DAC (CN0023) High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/1, ADR421, and AD8628 (CN0079)
Amplifier Type
Chopper (Zero-Drift)
Number Of Circuits
1
Output Type
Rail-to-Rail
Slew Rate
1 V/µs
Gain Bandwidth Product
2.5MHz
-3db Bandwidth
2.5MHz
Current - Input Bias
30pA
Voltage - Input Offset
1µV
Current - Supply
850µA
Current - Output / Channel
30mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 5 V, ±1.35 V ~ 2.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-5, TSOT-5, TSOP-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8628AUJ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
Lowest auto-zero amplifier noise
Low offset voltage: 1 μV
Input offset drift: 0.002 μV/°C
Rail-to-rail input and output swing
5 V single-supply operation
High gain, CMRR, and PSRR: 130 dB
Very low input bias current: 100 pA maximum
Low supply current: 1.0 mA
Overload recovery time: 50 μs
No external components required
Qualified for automotive applications
APPLICATIONS
Automotive sensors
Pressure and position sensors
Strain gage amplifiers
Medical instrumentation
Thermocouple amplifiers
Precision current sensing
Photodiode amplifiers
GENERAL DESCRIPTION
This amplifier has ultralow offset, drift, and bias current.
The AD8628/AD8629/AD8630 are wide bandwidth auto-zero
amplifiers featuring rail-to-rail input and output swing and low
noise. Operation is fully specified from 2.7 V to 5 V single supply
(±1.35 V to ±2.5 V dual supply).
The AD8628/AD8629/AD8630 provide benefits previously
found only in expensive auto-zeroing or chopper-stabilized
amplifiers. Using Analog Devices, Inc., topology, these zero-
drift amplifiers combine low cost with high accuracy and low
noise. No external capacitor is required. In addition, the AD8628/
AD8629/AD8630 greatly reduce the digital switching noise
found in most chopper-stabilized amplifiers.
With an offset voltage of only 1 μV, drift of less than 0.005 μV/°C,
and noise of only 0.5 μV p-p (0 Hz to 10 Hz), the AD8628/
AD8629/AD8630 are suited for applications where error
sources cannot be tolerated. Position and pressure sensors,
medical equipment, and strain gage amplifiers benefit greatly
from nearly zero drift over their operating temperature range.
Many systems can take advantage of the rail-to-rail input and
output swings provided by the AD8628/AD8629/AD8630 to
reduce input biasing complexity and maximize SNR.
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.
Zero-Drift, Single-Supply, Rail-to-Rail
Input/Output Operational Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The AD8628/AD8629/AD8630 are specified for the extended
industrial temperature range (−40°C to +125°C). The AD8628
is available in tiny 5-lead TSOT, 5-lead SOT-23, and 8-lead
narrow SOIC plastic packages. The AD8629 is available in the
standard 8-lead narrow SOIC and MSOP plastic packages. The
AD8630 quad amplifier is available in 14-lead narrow SOIC and
14-lead TSSOP plastic packages. See the Ordering Guide for
automotive grades.
Figure 4. 14-Lead SOIC_N (R-14) and 14-Lead TSSOP (RU-14)
Figure 3. 8-Lead SOIC_N (R-8) and 8-Lead MSOP (RM-8)
Figure 1. 5-Lead TSOT (UJ-5) and 5-Lead SOT-23 (RJ-5)
AD8628/AD8629/AD8630
OUT B
OUT A
OUT A
PIN CONFIGURATIONS
©2002–2011 Analog Devices, Inc. All rights reserved.
–IN A
+IN A
+IN A
+IN B
–IN B
–IN A
OUT
–IN
+IN
NC
V–
+IN
Figure 2. 8-Lead SOIC_N (R-8)
V–
V–
V+
1
2
3
4
NC = NO CONNECT
1
2
3
1
2
3
4
1
2
3
4
5
6
7
(Not to Scale)
(Not to Scale)
(Not to Scale)
(Not to Scale)
AD8628
TOP VIEW
AD8628
TOP VIEW
AD8629
TOP VIEW
AD8630
TOP VIEW
8
7
6
5
14
13
12
11
10
8
7
6
5
5
4
9
8
NC
V+
OUT
NC
V+
–IN
V+
OUT B
–IN B
+IN B
OUT D
–IN D
+IN D
V–
+IN C
–IN C
OUT C
www.analog.com

Related parts for AD8628AUJ-REEL7

AD8628AUJ-REEL7 Summary of contents

Page 1

FEATURES Lowest auto-zero amplifier noise Low offset voltage: 1 μV Input offset drift: 0.002 μV/°C Rail-to-rail input and output swing 5 V single-supply operation High gain, CMRR, and PSRR: 130 dB Very low input bias current: 100 pA maximum Low ...

Page 2

AD8628/AD8629/AD8630 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configurations ........................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—V = 5.0 V....................................... 3 S Electrical Characteristics—V = 2.7 V....................................... 4 S Absolute Maximum Ratings............................................................ ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS— 5 2 25°C, unless otherwise noted Table 1. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current AD8628/AD8629 AD8630 Input Offset Current Input Voltage Range Common-Mode Rejection ...

Page 4

AD8628/AD8629/AD8630 ELECTRICAL CHARACTERISTICS— Table 2. Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current AD8628/AD8629 AD8630 Input Offset Current Input Voltage Range Common-Mode Rejection ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage 1 Differential Input Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) ESD AD8628 HBM 8-Lead SOIC FICDM 8-Lead ...

Page 6

AD8628/AD8629/AD8630 TYPICAL PERFORMANCE CHARACTERISTICS 180 V = 2.7V S 160 T = 25°C A 140 120 100 –2.5 –1.5 –0.5 0.5 INPUT OFFSET VOLTAGE (µV) Figure 5. Input Offset Voltage Distribution ...

Page 7

V = 2.7V S 100 10 SOURCE SINK 1 0.1 0.01 0.0001 0.001 0.01 0.1 LOAD CURRENT (mA) Figure 11. Output Voltage to Supply Rail vs. Load Current 1500 2. ...

Page 8

AD8628/AD8629/AD8630 100 –10 –20 –30 1k 10k 100k FREQUENCY (Hz) Figure 17. Closed-Loop Gain vs. Frequency ...

Page 9

V = ±1.35V 50pF ∞ TIME (4µs/DIV) Figure 23. Small Signal Transient Response V = ±2. 50pF ∞ ...

Page 10

AD8628/AD8629/AD8630 V = ±2. 1kHz @ ±3V p 0pF 10kΩ TIME (200µs/DIV) Figure 29. No Phase Reversal 140 V = 2.7V S 120 100 80 ...

Page 11

FREQUENCY (Hz) Figure 35. Maximum Output Swing vs. Frequency 0. 2.7V S 0.45 0.30 0.15 0 –0.15 –0.30 –0.45 –0. ...

Page 12

AD8628/AD8629/AD8630 120 NOISE AT 10kHz = 36.4nV 105 FREQUENCY (kHz) Figure 41. Voltage Noise Density from kHz 120 ...

Page 13

– 1kΩ 100 V – 1kΩ – 10kΩ – 10kΩ – 100kΩ ...

Page 14

AD8628/AD8629/AD8630 FUNCTIONAL DESCRIPTION The AD8628/AD8629/AD8630 are single-supply, ultrahigh precision rail-to-rail input and output operational amplifiers. The typical offset voltage of less than 1 μV allows these amplifiers to be easily configured for high gains without risk of excessive output voltage ...

Page 15

PEAK-TO-PEAK NOISE Because of the ping-pong action between auto-zeroing and chopping, the peak-to-peak noise of the AD8628/AD8629/ AD8630 is much lower than the competition. Figure 50 and Figure 51 show this comparison. e p-p = 0.5µ 0.1Hz ...

Page 16

AD8628/AD8629/AD8630 INPUT OVERVOLTAGE PROTECTION Although the AD8628/AD8629/AD8630 are rail-to-rail input amplifiers, care should be taken to ensure that the potential difference between the inputs does not exceed the supply voltage. Under normal negative feedback operating conditions, the amplifier corrects its ...

Page 17

CH1 = 50mV/DIV CH2 = 1V/DIV OUT 0V TIME (500µs/DIV) Figure 59. Negative Input Overload Recovery for the AD8628 0V CH1 = 50mV/DIV CH2 = 1V/DIV OUT 0V TIME (500µs/DIV) Figure ...

Page 18

AD8628/AD8629/AD8630 PRECISION CURRENT SHUNT SENSOR A precision current shunt sensor benefits from the unique attributes of auto-zero amplifiers when used in a differencing configuration, as shown in Figure 63. Current shunt sensors are used in precision current sources for feedback ...

Page 19

OUTLINE DIMENSIONS 2.90 BSC 5 4 2.80 BSC 1.60 BSC 0.95 BSC 1.90 * 0.90 MAX BSC 0.70 MIN * 1.00 MAX 0.20 0.08 0.10 MAX 0.50 SEATING PLANE 0.30 * COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH ...

Page 20

AD8628/AD8629/AD8630 8.75 (0.3445) 8.55 (0.3366 6.20 (0.2441) 4.00 (0.1575) 1 5.80 (0.2283) 3.80 (0.1496) 7 1.27 (0.0500) BSC 1.75 (0.0689) 0.25 (0.0098) 1.35 (0.0531) 0.10 (0.0039) COPLANARITY SEATING 0.51 (0.0201) 0.10 PLANE 0.25 (0.0098) 0.31 (0.0122) 0.17 (0.0067) ...

Page 21

... ORDERING GUIDE 1, 2 Model Temperature Range AD8628AUJ-REEL −40°C to +125°C AD8628AUJ-REEL7 −40°C to +125°C AD8628AUJZ-R2 −40°C to +125°C AD8628AUJZ-REEL −40°C to +125°C AD8628AUJZ-REEL7 −40°C to +125°C AD8628ARZ −40°C to +125°C AD8628ARZ-REEL −40°C to +125°C AD8628ARZ-REEL7 − ...

Page 22

AD8628/AD8629/AD8630 NOTES Rev Page ...

Page 23

NOTES AD8628/AD8629/AD8630 Rev Page ...

Page 24

AD8628/AD8629/AD8630 NOTES ©2002–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02735-0-4/11(I) Rev Page ...

Related keywords