ADA4051-1 Analog Devices, ADA4051-1 Datasheet

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ADA4051-1

Manufacturer Part Number
ADA4051-1
Description
1.8 V, Micropower, Zero-Drift, Rail-to-Rail Input/Output Op Amp
Manufacturer
Analog Devices
Datasheet

Specifications of ADA4051-1

Vcc-vee
1.8V to 5.5V
Isy Per Amplifier
15µA
Packages
SOT-23,SC70
-3db Bandwidth
125kHz
Slew Rate
0.06V/µs
Vos
2µV
Ib
20pA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
95nV/rtHz

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FEATURES
Very low supply current: 13 μA typical
Low offset voltage: 15 μV maximum
Offset voltage drift: 20 nV/°C
Single-supply operation: 1.8 V to 5.5 V
High PSRR: 110 dB minimum
High CMRR: 110 dB minimum
Rail-to-rail input/output
Unity-gain stable
Extended industrial temperature range
APPLICATIONS
Pressure and position sensors
Temperature measurements
Electronic scales
Medical instrumentation
Battery-powered equipment
Handheld test equipment
GENERAL DESCRIPTION
The ADA4051-1/ADA4051-2 are CMOS, micropower, zero-
drift operational amplifiers utilizing an innovative chopping
technique. These amplifiers feature rail-to-rail input/output
swing and extremely low offset voltage while operating from a
1.8 V to 5.5 V power supply. In addition, these amplifiers offer
high power supply rejection ratio (PSRR) and common-mode
rejection ratio (CMRR) while operating with a typical supply
current of 13 μA per amplifier. This combination of features
makes the ADA4051-1/ADA4051-2 amplifiers ideal choices for
battery-powered applications where high precision and low
power consumption are important.
Rev. B
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.
Rail-to-Rail Input/Output Op Amp
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADA4051-1/ADA4051-2 are specified for the extended
industrial temperature range of −40°C to +125°C. The ADA4051-1
amplifier is available in 5-lead SOT-23 and 5-lead SC-70 packages.
The ADA4051-2 amplifier is available in 8-lead MSOP and 8-lead
LFCSP packages.
The ADA4051-1/ADA4051-2 are members of a growing series
of zero-drift op amps offered by Analog Devices, Inc. Refer to
Table 1 for a list of these devices.
Table 1. Op Amps
Supply
Single
Dual
Quad
1.8 V, Micropower, Zero-Drift,
Low Power, 5 V
AD8538
AD8539
ADA4051-1/ADA4051-2
OUT A
NOTES
1. IT IS RECOMMENDED THAT THE
–IN A
+IN A
EXPOSED PAD BE CONNECTED TO V–.
OUT A
–IN A
+IN A
V–
©2009–2010 Analog Devices, Inc. All rights reserved.
PIN CONFIGURATION
OUT
+IN
–IN
Figure 4. 8-Lead LFCSP (CP-8-2)
V–
Figure 1. 5-Lead SOT-23 (RJ-5)
+IN
Figure 3. 8-Lead MSOP (RM-8)
V–
Figure 2. 5-Lead SC-70 (KS-5)
V–
1
2
3
4
1
2
3
1
2
3
4
1
2
3
ADA4051-2
ADA4051-1
(Not to Scale)
(Not to Scale)
ADA4051-2
ADA4051-1
(Not to Scale)
(Not to Scale)
TOP VIEW
TOP VIEW
TOP VIEW
TOP VIEW
PIN 1
INDICATOR
5 V
AD8628
AD8629
AD8630
5
4
8
7
6
5
8 V+
7 OUT B
6 –IN B
5 +IN B
5
4
V+
OUT
V+
OUT B
–IN B
+IN B
V+
–IN
www.analog.com
16 V
AD8638
AD8639

Related parts for ADA4051-1

ADA4051-1 Summary of contents

Page 1

... EXPOSED PAD BE CONNECTED TO V–. Figure 4. 8-Lead LFCSP (CP-8-2) The ADA4051-1/ADA4051-2 are specified for the extended industrial temperature range of −40°C to +125°C. The ADA4051-1 amplifier is available in 5-lead SOT-23 and 5-lead SC-70 packages. The ADA4051-2 amplifier is available in 8-lead MSOP and 8-lead LFCSP packages. ...

Page 2

... Changes to Table 5 ............................................................................ 5 Updated Outline Dimensions ....................................................... 17 Changes to Ordering Guide .......................................................... 18 10/09—Rev Rev. A Added ADA4051-1, 5-Lead SOT-23 Package ................. Universal Added ADA4051-2, 8-Lead LFCSP Package .................. Universal Changes to the Features and General Description Section, Added Figure 1 and Figure 3 ........................................................... 1 Moved Electrical Characteristics—1.8 V Operation Section .... 3 Changes to Offset Voltage Parameter and Supply Current per Amplifier Parameter, Table 2 ...

Page 3

... GBP C = 100 pF Φ 100 pF 1 100 p 0 kHz kHz n Rev Page ADA4051-1/ADA4051-2 Min Typ Max 0.02 0 200 10 100 150 0 1.8 105 125 100 106 130 100 ...

Page 4

... OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short-Circuit Current Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current per Amplifier ADA4051-2 ADA4051-1 DYNAMIC PERFORMANCE Slew Rate Settling Time Gain Bandwidth Product Phase Margin Channel Separation NOISE PERFORMANCE Voltage Noise ...

Page 5

... MSOP (RM-8) 8-Lead LFCSP (CP-8-2) POWER SEQUENCING The op amp supplies must be established simultaneously with or before any input signals are applied. If this is not possible, the input current must be limited to 10 mA. ESD CAUTION Rev Page ADA4051-1/ADA4051-2 θ θ Unit JA JC 190 92 °C/W ...

Page 6

... ADA4051-1/ADA4051-2 TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted. A 300 250 200 150 100 50 0 –10 –8 –6 –4 – (µV) OS Figure 5. Input Offset Voltage Distribution 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10 TCV (µV/°C) OS Figure 6. Input Offset Voltage Drift Distribution with Temperature ...

Page 7

... B– –400 1.2 1.5 1.8 Figure 15. Input Bias Current vs. Common-Mode Voltage and Temperature 10,000 –40°C +25°C +85°C +125° Rev Page ADA4051-1/ADA4051-2 100 – 100 TEMPERATURE (°C) Figure 14. Input Bias Current vs. Temperature ...

Page 8

... ADA4051-1/ADA4051 25°C, unless otherwise noted. A 10,000 V = 1.8V SY 1000 100 10 1 0.1 0.01 0.001 0.01 0.1 1 LOAD CURRENT (mA) Figure 17. Output Voltage ( Supply Rail vs. Load Current OL and Temperature 1800 R = 100kΩ L 1799 1798 1797 R = 10kΩ L 1796 1795 1794 –40 –25 – ...

Page 9

... C = 50pF L 100k 1M Rev Page ADA4051-1/ADA4051 ADA4051-2, 1.8V ADA4051- ADA4051-1, 1.8V ADA4051- –40 –25 – TEMPERATURE (°C) Figure 26. Total Supply Current vs. Temperature V C PHASE GAIN 1k 10k 100k FREQUENCY (Hz) Figure 27. Open-Loop Gain and Phase vs. Frequency ...

Page 10

... ADA4051-1/ADA4051 25°C, unless otherwise noted. A 10k 100 10 1 0.1 1k 10k FREQUENCY (Hz) Figure 29. Output Impedance vs. Frequency 110 100 100 1k 10k FREQUENCY (Hz) Figure 30. CMRR vs. Frequency 120 100 80 60 PSRR PSRR– 0 100 1k 10k FREQUENCY (Hz) Figure 31. PSRR vs. Frequency G = − ...

Page 11

... TIME (100µs/DIV) Figure 36. Large-Signal Transient Response TIME (100µs/DIV) Figure 37. Small-Signal Transient Response 100 10kΩ 100pF 50mV p-p IN Rev Page ADA4051-1/ADA4051 ±2. 50mV p 10kΩ 50pF L 40 −OVERSHOOT 30 20 ...

Page 12

... ADA4051-1/ADA4051 25°C, unless otherwise noted 1.8V SY 1.94µV p-p TIME (4s/DIV) Figure 41. Input Voltage Noise, 0 1.8V SY 100 100 FREQUENCY (Hz) Figure 42. Voltage Noise Density vs. Frequency 0.15 0.10 0.05 INPUT VOLTAGE 0 –0.05 OUTPUT VOLTAGE TIME (40µs/DIV) Figure 43. Positive Overload Recovery 100 1k 10k ...

Page 13

... 100pF – ±0. p 10kΩ 100pF L Rev Page ADA4051-1/ADA4051-2 INPUT VOLTAGE OUTPUT VOLTAGE V = ±2. –10 TIME (40µs/DIV) Figure 50. Negative Overload Recovery INPUT VOLTAGE OUTPUT VOLTAGE V = ±2. p 10kΩ ...

Page 14

... ADA4051-1/ADA4051 25°C, unless otherwise noted. A –100 100kΩ 1kΩ –110 –120 –130 –140 –150 20 200 2k FREQUENCY (Hz) Figure 53. Channel Separation vs. Frequency 1.8 1.5 1.2 0 1.7V 0 10kΩ 50pF L 0 100 1k 10k FREQUENCY (Hz) Figure 54. Output Swing vs. Frequency V OUT V IN TIME (200µs/DIV) Figure 55. No Phase Reversal – ...

Page 15

... Figure 59 shows the block diagram design of the ADA4051-1/ ADA4051-2 chopper amplifiers employing a local feedback loop called autocorrection feedback (ACFB). The main signal path ...

Page 16

... ADA4051-1/ADA4051-2 The design architecture of the ADA4051-1/ADA4051-2 specifically targets precision signal conditioning applications requiring accurate and stable performance from bandwidth. In summary, the main features of the ADA4051-1/ ADA4051-2 chopper amplifiers are • Considerable suppression of the offset-related ripple • No affect on the desired input signal as long as its ...

Page 17

... COMPLIANT TO JEDEC STANDARDS MO-178-AA Figure 61. 5-Lead Small Outline Transistor Package [SOT-23] (RJ-5) Dimensions shown in millimeters 2.20 2.00 1.80 2.40 1. 2.10 1.25 1.80 1. 0.65 BSC 1.00 0.40 1.10 0.90 0.10 0.80 0.70 0.22 SEATING 0.30 0.08 PLANE 0.15 COMPLIANT TO JEDEC STANDARDS MO-203-AA Figure 62. 5-Lead Thin Shrink Small Outline Transistor Package [SC-70] (KS-5) Dimensions shown in millimeters Rev Page ADA4051-1/ADA4051-2 0.55 10° 0.45 0.20 5° 0.35 BSC 0° 0.46 0.36 0.26 ...

Page 18

... ADA4051-1ARJZ-R2 −40°C to +125°C ADA4051-1ARJZ-R7 −40°C to +125°C ADA4051-1ARJZ-RL −40°C to +125°C ADA4051-1AKSZ-R2 −40°C to +125°C ADA4051-1AKSZ-R7 −40°C to +125°C ADA4051-1AKSZ-RL −40°C to +125°C ADA4051-2ACPZ-R2 −40°C to +125°C ADA4051-2ACPZ-R7 −40°C to +125°C ADA4051-2ACPZ-RL − ...

Page 19

... NOTES Rev Page ADA4051-1/ADA4051-2 ...

Page 20

... ADA4051-1/ADA4051-2 NOTES ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08056-0-1/10(B) Rev Page ...

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