ADA4841-1YRJZ-R2 Analog Devices Inc, ADA4841-1YRJZ-R2 Datasheet

IC OPAMP VF R-R LP LN SOT23-6

ADA4841-1YRJZ-R2

Manufacturer Part Number
ADA4841-1YRJZ-R2
Description
IC OPAMP VF R-R LP LN SOT23-6
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADA4841-1YRJZ-R2

Slew Rate
13 V/µs
Amplifier Type
Voltage Feedback
Number Of Circuits
1
Output Type
Rail-to-Rail
-3db Bandwidth
80MHz
Current - Input Bias
3µA
Voltage - Input Offset
40µV
Current - Supply
1.5mA
Current - Output / Channel
60mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 12 V, ±1.35 V ~ 6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Op Amp Type
Low Power
No. Of Amplifiers
1
Bandwidth
80MHz
Supply Voltage Range
2.7V To 12V
Amplifier Case Style
SOT-23
No. Of Pins
6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
FEATURES
Low power: 1.1 mA/amp
Low wideband noise
Low 1/f noise
Low distortion: −105 dBc @ 100 kHz, V
High speed
Low offset voltage: 0.3 mV maximum
Rail-to-rail output
Power down
Wide supply range: 2.7 V to 12 V
APPLICATIONS
Low power, low noise signal processing
Battery-powered instrumentation
16-bit PulSAR® ADC drivers
GENERAL DESCRIPTION
The ADA4841-1/ADA4841-2 are unity gain stable, low noise
and distortion, rail-to-rail output amplifiers that have a quiescent
current of 1.5 mA maximum. In spite of their low power
consumption, these amplifiers offer low wideband voltage
noise performance of 2.1 nV/√Hz and 1.4 pA/√Hz current noise,
along with excellent spurious-free dynamic range (SFDR) of
−105 dBc at 100 kHz. To maintain a low noise environment at
lower frequencies, the amplifiers have low 1/f noise of 7 nV/√Hz
and 13 pA/√Hz at 10 Hz.
The ADA4841-1/ADA4841-2 output can swing to less than
50 mV of either rail. The input common-mode voltage range
extends down to the negative supply. The ADA4841-1/
ADA4841-2 can drive up to 10 pF of capacitive load with
minimal peaking.
The ADA4841-1/ADA4841-2 provide the performance required
to efficiently support emerging 16-bit to 18-bit ADCs and are
ideal for portable instrumentation, high channel count, industrial
measurement, and medical applications. The ADA4841-1/
ADA4841-2 are ideally suited to drive the AD7685/AD7686,
16-bit PulSAR ADCs.
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.
2.1 nV/√Hz
1.4 pA/√Hz
7 nV/√Hz @ 10 Hz
13 pA/√Hz @ 10 Hz
80 MHz, −3 dB bandwidth (G = +1)
12 V/μs slew rate
175 ns settling time to 0.1%
O
= 2 V p-p
Low Power, Low Noise and Distortion,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADA4841-1/ADA4841-2 packages feature RoHS compliant
lead finishes. The amplifiers are rated to work over the
industrial temperature range (−40°C to +125°C).
Figure 3. 8-Lead MSOP (RM), 8-Lead SOIC_N (R), and 8-Lead LFCSP_WD (CP)
Rail-to-Rail Output Amplifiers
–100
–120
–110
–30
–40
–50
–60
–70
–80
–90
0.01
V
G = +1
S
= ±5V
V
ADA4841-1/ADA4841-2
2V p-p SECOND
OUT
–V
–V
+IN
CONNECTION DIAGRAMS
–IN
+IN
NC
NOTES
1. FOR 8-LEAD LFCSP_WD, CONNECT
S
S
©2005–2010 Analog Devices, Inc. All rights reserved.
OUT1
EXPOSED PADDLE TO GND.
–IN1
+IN1
4
1
2
3
Figure 4. Harmonic Distortion
2
3
–V
1
Figure 2. 6-Lead SOT-23 (RJ)
ADA4841-1
ADA4841-1
S
(Not to Scale)
Figure 1. 8-Lead SOIC (R)
TOP VIEW
1
2
3
4
ADA4841-2
(Not to Scale)
FREQUENCY (MHz)
TOP VIEW
0.1
8
7
6
5
6
5
4
+V
V
POWER DOWN
NC
+V
POWER DOWN
–IN
OUT
S
S
2V p-p THIRD
8
7
6
5
+V
OUT2
–IN2
+IN2
S
www.analog.com
1

Related parts for ADA4841-1YRJZ-R2

ADA4841-1YRJZ-R2 Summary of contents

Page 1

... The ADA4841-1/ADA4841-2 output can swing to less than either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841-1/ ADA4841-2 can drive capacitive load with minimal peaking. The ADA4841-1/ADA4841-2 provide the performance required to efficiently support emerging 16-bit to 18-bit ADCs and are ideal for portable instrumentation, high channel count, industrial measurement, and medical applications ...

Page 2

... Changes to Table 1............................................................................ 3 Changes to Table 2............................................................................ 4 Changes to Table 3............................................................................ 5 Changes to Input Protection Section ........................................... 15 Changes to Ordering Guide .......................................................... 20 10/05—Rev Rev. B Added ADA4841-2.............................................................Universal Changes to General Description and Features ............................. 1 Changes to Table 1............................................................................ 3 Changes to Table 2............................................................................ 4 Changes to Table 3............................................................................ 5 Changes to Table 4, Table 5, and Figure 4 ..................................... 6 Headroom Considerations ...

Page 3

... Input Capacitance, Common Mode Input Capacitance, Differential Mode Input Common-Mode Voltage Range Common-Mode Rejection Ratio (CMRR) MATCHING CHARACTERISTICS (ADA4841-2) Input Offset Voltage Input Bias Current POWER DOWN PIN (ADA4841-1) POWER DOWN Voltage POWER DOWN Voltage Input Current Enable Power Down Switching Speed ...

Page 4

... Input Capacitance, Common Mode Input Capacitance, Differential Mode Input Common-Mode Voltage Range Common-Mode Rejection Ratio (CMRR) MATCHING CHARACTERISTICS (ADA4841-2) Input Offset Voltage Input Bias Current POWER DOWN PIN (ADA4841-1) POWER DOWN Voltage POWER DOWN Voltage Input Current Enable Power Down Switching Speed ...

Page 5

... Input Capacitance, Common Mode Input Capacitance, Differential Mode Input Common-Mode Voltage Range Common-Mode Rejection Ratio (CMRR) MATCHING CHARACTERISTICS (ADA4841-2) Input Offset Voltage Input Bias Current POWER DOWN PIN (ADA4841-1) POWER DOWN Voltage POWER DOWN Voltage Input Current Enable Power Down Switching Speed ...

Page 6

... LFCSP_WD 103 MAXIMUM POWER DISSIPATION The maximum safe power dissipation for the ADA4841-1/ ADA4841-2 is limited by the associated rise in junction temperature ( the die. At approximately 150°C, which is J the glass transition temperature, the plastic changes its properties. Even temporarily exceeding this temperature limit ...

Page 7

... FREQUENCY (MHz) Figure 8. Small Signal Frequency Response vs. Gain 20pF 20pF WITH 100Ω SNUBBER 0pF 10pF 10 100 G = – 100 Rev Page ADA4841-1/ADA4841 –40° 20mV p +125°C –3 –6 –9 0 FREQUENCY (MHz) Figure 9. Small Signal Frequency Response vs. Temperature 2 ...

Page 8

... ADA4841-1/ADA4841-2 140 MAGNITUDE 120 100 PHASE –20 10 100 1k 10k 100k FREQUENCY (Hz) Figure 12. Open-Loop Gain and Phase vs. Frequency – p-p OUT –40 –50 –60 –70 – SECOND SECOND –90 –100 –110 –120 –130 0.01 0.1 FREQUENCY (MHz) Figure 13. Harmonic Distortion vs. Frequency for Various Gains – ...

Page 9

... Figure 22. Small Signal Transient Response for Various Capacitive Loads 0.130 TIME = 50ns/DIV 0.125 0.120 0.115 0.110 0.105 0.100 0.095 0.090 4 6 Figure 23. Small Signal Transient Response for Various Supplies Rev Page ADA4841-1/ADA4841 + + ± 0pF 10pF 20pF 47pF ...

Page 10

... ADA4841-1/ADA4841 OUT –1 Figure 24. Input Overdrive Recovery 6 V × OUT –1 Figure 25. Output Overdrive Recovery 1.5 = ± p-p OUT TIME = 100ns/DIV 1 0 –0.5 –1.0 –1.5 Figure 26. Large Signal Transient Response for Various Gains 4 4.0 TIME = 200ns/DIV 3.5 3.0 2.5 2.0 1.5 1 ...

Page 11

... Figure 35. Input Offset Voltage vs. Temperature for Various Supplies Rev Page ADA4841-1/ADA4841 +PSR –PSR 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 33. PSR vs. Frequency 100 1k 10k 100k 1M FREQUENCY (Hz) Figure 34. Output Impedance vs. Frequency ...

Page 12

... ADA4841-1/ADA4841-2 3.6 3 + + ±5V S 3.2 3.1 –40 –25 – TEMPERATURE (°C) Figure 36. Input Bias Current vs. Temperature for Various Supplies 1.6 1.5 1.4 1.3 1 ±5V S 1.1 1 + +3V S 0.8 –40 –25 – TEMPERATURE (°C) Figure 37. Supply Current vs. Temperature for Various Supplies – ...

Page 13

... Gain bandwidth is kept high for this power level to preserve the outstanding linearity performance for frequencies up to 100 kHz. The ADA4841-1 has a power- down function to further reduce power consumption. All this results in a low noise, power efficient, precision amplifier that is well-suited for high resolution and precision applications ...

Page 14

... SOURCE RESISTANCE (Ω) Figure 41. RTI Noise vs. Source Resistance HEADROOM CONSIDERATIONS The ADA4841-1/ADA4841-2 are designed to provide maximum input and output signal ranges with 16-bit to 18-bit dc linearity. As the input or output headroom limits are reached, the signal linearity degrades. The input stage positive limit is almost exactly a volt below the positive supply at room temperature ...

Page 15

... S– INPUT PROTECTION 10 100 The ADA4841-1/ADA4841-2 are fully protected from ESD events, withstanding human body model ESD events of 2.5 keV and charge device model events of 1 keV with no measured ) are both at IP performance degradation. The precision input is protected is swept S with an ESD network between the power supplies and diode clamps across the input device pair, as shown in Figure 47 ...

Page 16

... ADA4841-1/ADA4841-2 POWER-DOWN OPERATION Figure 48 shows the ADA4841-1 power-down circuitry. If the POWER DOWN pin is left unconnected, then the base of the input PNP transistor is pulled high through the internal pull-up resistor to the positive supply, and the part is turned on. Pulling the POWER DOWN pin approximately 1.7 V below the positive supply turns the part off, reducing the supply current to approximately 40 μ ...

Page 17

... ADR364 ground is used as the amplifier negative supply, then note that at the low end of the input range close to ground, the ADA4841-1/ ADA4841-2 exhibit substantial nonlinearity, as any rail-to-rail output amplifier. The ADA4841-1/ADA4841-2 drive a one- pole, low-pass filter. This filter limits the already very low noise contribution from the amplifier to the AD7685 ...

Page 18

... GROUND PLANE It is important to avoid ground in the areas under and around the input and output of the ADA4841-1/ADA4841-2. Stray capacitance created between the ground plane and the input and output pads of a device are detrimental to high speed amplifier performance. Stray capacitance at the inverting input, along with the amplifier input capacitance, lowers the phase margin and can cause instability ...

Page 19

... MAX 1.45 MAX 0.08 MIN 0.95 MIN SEATING 0.50 MAX PLANE 0.30 MIN COMPLIANT TO JEDEC STANDARDS MO-178-AB Figure 54. 6-Lead Small Outline Transistor Package [SOT-23] (RJ-6) Dimensions shown in millimeters Rev Page ADA4841-1/ADA4841-2 3.20 3.00 2.80 5. 4.90 4. PIN 1 0.65 BSC 15° MAX 1 ...

Page 20

... Model Temperature Range ADA4841-1YRZ −40°C to +125°C ADA4841-1YRZ-R7 −40°C to +125°C ADA4841-1YRZ-RL −40°C to +125°C ADA4841-1YRJZ-R2 −40°C to +125°C ADA4841-1YRJZ-R7 −40°C to +125°C ADA4841-1YRJZ-RL −40°C to +125°C ADA4841-2YRMZ −40°C to +125°C ADA4841-2YRMZ-R7 −40°C to +125°C ADA4841-2YRMZ-RL − ...

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