AD8137YCPZ-R2 Analog Devices Inc, AD8137YCPZ-R2 Datasheet

IC AMP DIFF R-R LP 20MA 8LFCSP

AD8137YCPZ-R2

Manufacturer Part Number
AD8137YCPZ-R2
Description
IC AMP DIFF R-R LP 20MA 8LFCSP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD8137YCPZ-R2

Amplifier Type
Differential
Number Of Circuits
1
Output Type
Differential, Rail-to-Rail
Slew Rate
450 V/µs
-3db Bandwidth
110MHz
Current - Input Bias
500nA
Voltage - Input Offset
700µV
Current - Supply
3.2mA
Current - Output / Channel
20mA
Voltage - Supply, Single/dual (±)
2.7 V ~ 12 V, ± 2.7 V ~ 6 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-LFCSP
No. Of Amplifiers
1
Input Offset Voltage
2.6mV
Gain Db Max
1.04dB
Bandwidth
110MHz
Supply Voltage Range
2.7V To ± 6V
Supply Current
3.2mA
Amplifier Case Style
LFCSP
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Gain Bandwidth Product
-
FEATURES
Fully differential
Extremely low power with power-down feature
High speed
12-bit SFDR performance @ 500 kHz
Fast settling time: 100 ns to 0.02%
Low input offset voltage: ±2.6 mV max
Low input offset current: 0.45 µA max
Differential input and output
Differential-to-differential or single-ended-to-differential
Rail-to-rail output
Adjustable output common-mode voltage
Externally adjustable gain
Wide supply voltage range: 2.7 V to 12 V
Available in small SOIC package
APPLICATIONS
ADC drivers
Portable instrumentation
Battery-powered applications
Single-ended-to-differential converters
Differential active filters
Video amplifiers
Level shifters
GENERAL DESCRIPTON
The AD8137 is a low cost differential driver with a rail-to-rail
output that is ideal for driving ADCs in systems that are sensitive
to power and cost. The AD8137 is easy to apply, and its internal
common-mode feedback architecture allows its output common-
mode voltage to be controlled by the voltage applied to one pin.
The internal feedback loop also provides inherently balanced
outputs as well as suppression of even-order harmonic distortion
products. Fully differential and single-ended-to-differential gain
configurations are easily realized by the AD8137. External feedback
networks consisting of four resistors determine the closed-loop
gain of the amplifier. The power-down feature is beneficial in
critical low power applications.
Rev. D
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.
2.6 mA quiescent supply current @ 5 V
450 µA in power-down mode @ 5 V
110 MHz large signal 3 dB bandwidth @ G = 1
450 V/µs slew rate
operation
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The AD8137 is manufactured on Analog Devices, Inc.,
proprietary second-generation XFCB process, enabling it to
achieve high levels of performance with very low power
consumption.
The AD8137 is available in the small 8-lead SOIC package and
3 mm × 3 mm LFCSP package. It is rated to operate over the
extended industrial temperature range of −40°C to +125°C.
–10
–11
–12
–1
–2
–3
–4
–5
–6
–7
–8
–9
3
2
1
0
0.1
Figure 2. Small Signal Response for Various Gains
FUNCTIONAL BLOCK DIAGRAM
R
V
G
O, dm
= 1kΩ
Differential ADC Driver
+OUT
V
= 0.1V p-p
Low Cost, Low Power,
©2004–2010 Analog Devices, Inc. All rights reserved.
OCM
V
–IN
S+
1
1
2
3
4
AD8137
FREQUENCY (MHz)
G = 10
Figure 1.
G = 1
10
G = 5
8
7
6
5
+IN
PD
V
–OUT
S–
100
G = 2
AD8137
www.analog.com
1000

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AD8137YCPZ-R2 Summary of contents

Page 1

FEATURES Fully differential Extremely low power with power-down feature 2.6 mA quiescent supply current @ 5 V 450 µA in power-down mode @ 5 V High speed 110 MHz large signal 3 dB bandwidth @ 450 V/µs ...

Page 2

AD8137 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Descripton .......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 6 Thermal Resistance ...................................................................... 6 Maximum Power Dissipation ..................................................... 6 ...

Page 3

SPECIFICATIONS V = ± 25°C, differential gain = OCM Table 1. Parameter DIFFERENTIAL INPUT PERFORMANCE Dynamic Performance −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth Slew Rate Settling Time ...

Page 4

AD8137 2 25°C, differential gain = OCM Table 2. Parameter DIFFERENTIAL INPUT PERFORMANCE Dynamic Performance −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth Slew Rate Settling Time ...

Page 5

1 25°C, differential gain = OCM Table 3. Parameter DIFFERENTIAL INPUT PERFORMANCE Dynamic Performance −3 dB Small Signal Bandwidth −3 dB Large Signal Bandwidth Slew Rate Settling Time to ...

Page 6

AD8137 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter Supply Voltage V OCM Power Dissipation Input Common-Mode Voltage Storage Temperature Range Operating Temperature Range Lead Temperature (Soldering, 10 sec) Junction Temperature Stresses above those listed under Absolute Maximum Ratings may cause permanent ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 6. Pin Function Descriptions Pin No. Mnemonic Description 1 −IN Inverting Input internal feedback loop drives the output common-mode voltage to be equal to the voltage applied to OCM the V ...

Page 8

AD8137 TYPICAL PERFORMANCE CHARACTERISTICS Unless otherwise noted, differential gain = 1, R Figure 60 for the definition of terms – –2 –3 –4 – –6 –7 –8 ...

Page 9

R = 1kΩ 2kΩ –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 – 0.1V p – 100 FREQUENCY (MHz) ...

Page 10

AD8137 – 2kΩ –2 F –3 – 1kΩ F –5 –6 –7 – –9 = ± – 0.1V p – ...

Page 11

p –50 – 200Ω –70 – 500Ω – –100 –110 0.1 1 FREQUENCY (MHz) Figure 23. Second Harmonic Distortion at Various Loads – ...

Page 12

AD8137 – 500kHz p SECOND HARMONIC SOLID LINE –60 THIRD HARMONIC DASHED LINE –70 –80 –90 –100 –110 0.5 1.0 1.5 2.0 2.5 V (V) OCM Figure 29. Harmonic Distortion vs. V ...

Page 13

INPUT 6 OUTPUT –2 –4 –6 –8 TIME (ns) Figure 35. Overdrive Recovery 100 0pF 1pF –25 –50 – 100mV p-p ...

Page 14

AD8137 –5 PSRR = ∆V ∆V O, dm/ S –15 –25 –35 –PSRR –45 +PSRR –55 –65 –75 –85 0 FREQUENCY (MHz) Figure 41. PSRR vs. Frequency 1 0 –1 –2 –3 –4 –5 –6 – ...

Page 15

V OS OS, dm 0.1 0 –0.1 –0.2 –0.3 –40 – TEMPERATURE (°C) Figure 47. Offset Voltage vs. Temperature 1.2 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 0.50 1.50 2.50 ...

Page 16

AD8137 –1 = ± –2 –3 –4 –5 –5 –4 –3 –2 – OCM Figure 53. V vs. V Input Voltage O, cm OCM –20 –40 ...

Page 17

V = ± OCM –5 –4 –3 –2 – POWER-DOWN VOLTAGE (V) Figure 59. Supply Current vs. Power-Down Voltage Rev. D ...

Page 18

AD8137 TEST CIRCUITS V TEST TEST SIGNAL SOURCE V TEST TEST SIGNAL SOURCE R F 50Ω 1kΩ G 52.3Ω + AD8137 MIDSUPPLY V OCM 52.3Ω – 50Ω 1kΩ Figure ...

Page 19

THEORY OF OPERATION The AD8137 is a low power, low cost, fully differential voltage feedback amplifier that features a rail-to-rail output stage, common-mode circuitry with an internally derived common- mode reference voltage, and bias shutdown circuitry. The amplifier uses two ...

Page 20

AD8137 APPLICATIONS INFORMATION ANALYZING A TYPICAL APPLICATION WITH MATCHED R AND R NETWORKS F G Typical Connection and Definition of Terms Figure 64 shows a typical connection for the AD8137, using matched external R /R networks. The differential input F ...

Page 21

The differential output voltage noise contains contributions from the AD8137’s input voltage noise and input current noise as well as those from the external feedback networks. The contribution from the input voltage noise spectral density is computed as  R ...

Page 22

AD8137 +2.5V V GND IN –2.5V The input impedance of a conventional inverting op amp configuration is simply R ; however higher in Equation 19 G because a fraction of the differential output voltage appears at the summing ...

Page 23

Estimating DC Errors Primary differential output offset errors in the AD8137 are due to three major components: the input offset voltage, the offset between the V and V input currents interacting with the AN AP feedback network resistances, and the ...

Page 24

AD8137 Figure 67 shows the AD8137 in a unity-gain configuration, and with the following discussion, provides a good example of how to provide a proper termination Ω environment. 0.1F 2V p-p 50 1k ...

Page 25

GND V 0 –10 –20 –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 100 FREQUENCY (kHz) Figure 70. AD8137 Performance on Single 5 V Supply, −1.82 dBFS ...

Page 26

AD8137 OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY PIN 1 INDICATOR 0.90 MAX 0.85 NOM SEATING PLANE 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) ...

Page 27

... AD8137YRZ −40°C to +125°C AD8137YRZ-REEL −40°C to +125°C AD8137YRZ-REEL7 −40°C to +125°C AD8137YCP-REEL –40°C to +125°C AD8137YCPZ-R2 –40°C to +125°C AD8137YCPZ-REEL –40°C to +125°C AD8137YCPZ-REEL7 –40°C to +125°C AD8137YCP-EBZ AD8137YR-EBZ RoHS Compliant Part ...

Page 28

AD8137 NOTES ©2004–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04771-0-7/10(D) Rev Page ...

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