ADM4073 Analog Devices, ADM4073 Datasheet

no-image

ADM4073

Manufacturer Part Number
ADM4073
Description
Low Cost, Voltage Output, High-side Current Sense Amplifier
Manufacturer
Analog Devices
Datasheet

Specifications of ADM4073

Filter Option
No
Common Mode Input (v)min
+2V
Common Mode Input (v)max
+28V
Bandwidth G=10 (khz Typ)
1800kHz
Cmrr (db)
90dB
Vcc-vee
3V to 28V

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADM4073FWRJZ-REEL7
Manufacturer:
TI
Quantity:
460
Part Number:
ADM4073FWRJZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM4073FWRJZREEL7
Manufacturer:
NXP
Quantity:
6 081
Part Number:
ADM4073HWRJZ-REEL7
Manufacturer:
LT
Quantity:
604
Part Number:
ADM4073HWRJZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM4073TWRJZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM4073TWRJZ-REEL7
Manufacturer:
ADI
Quantity:
3 000
Part Number:
ADM4073TWRJZ-REEL7
Manufacturer:
AD
Quantity:
23 017
Part Number:
ADM4073TWRJZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
ADM4073WFWRJZ-RL7
Manufacturer:
ST
0
Part Number:
ADM4073WFWRJZ-RL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Company:
Part Number:
ADM4073WFWRJZ-RL7
Quantity:
6 000
FEATURES
Low cost, compact, current-sense solution
3 available gain versions
Typical ±1.0% full-scale accuracy
Supply current: 500 μA
Wide bandwidth: 1.8 MHz
Operating supply: 3 V to 28 V
Wide common-mode range: 2 V to 28 V
Operating temperature range: −40°C to +125°C
Available in a 6-lead SOT-23 package
Pin-to-pin compatibility with the MAX4073
APPLICATIONS
Cell phones
PDAs
Notebook computers
Portable, battery-powered systems
Smart battery packs and chargers
Automotive
Power management systems
PA bias control
General system-level, board-level current monitoring
Precision current sources
GENERAL DESCRIPTION
The ADM4073 is a low cost, high-side, current-sense amplifier
ideal for small portable applications, such as cell phones,
notebook computers, PDAs, and other systems where current
monitoring is required. The device is available in three different
gain models, eliminating the need for gain-setting resistors.
Because the ground path is not interrupted, the ADM4073 is
particularly useful in rechargeable battery-powered systems,
while its wide 1.8 MHz bandwidth makes it suitable for use
inside battery-charger control loops. The input common-mode
range of 2 V to 28 V is independent of the supply voltage.
Rev. A
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.
Independent of supply voltage
20 V/V (ADM4073T)
50 V/V (ADM4073F)
100 V/V (ADM4073H)
High-Side, Current-Sense Amplifier
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The voltage on the output pin is determined by the current
flowing through the selectable external sense resistor and the
gain of the version selected. The operating range is 3 V to 28 V
with a typical supply current of 500 μA.
The ADM4073 is available in a 6-lead SOT-23 package and is
specified over the automotive operating temperature range
(−40°C to +125°C).
3V TO 28V
2V TO 28V
2V TO 28V
3V TO 28V
0.1µF
Low Cost, Voltage Output,
FUNCTIONAL BLOCK DIAGRAM
0.1µF
APPLICATION DIAGRAM
V
©2006–2008 Analog Devices, Inc. All rights reserved.
CC
CURRENT
V
MIRROR
RG1
CC
RS+
RS+
GND
ADM4073
I
R
RGD
ADM4073
GND
Figure 1.
SENSE
Figure 2.
R
I
SENSE
RG1
AV
RS–
OUT
I
RGD = 12kΩ
LOAD
RS–
RG2
ADM4073
OUT
ADC
www.analog.com
V
V
OUT
OUT
V
OUT

Related parts for ADM4073

ADM4073 Summary of contents

Page 1

... The operating range with a typical supply current of 500 μA. The ADM4073 is available in a 6-lead SOT-23 package and is specified over the automotive operating temperature range (−40°C to +125°C). ...

Page 2

... ADM4073 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 Application Diagram ........................................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 4 Thermal Characteristics .............................................................. 4 REVISION HISTORY 10/08—Rev Rev. A Changes to Theory of Operation Section and Output (OUT) Section .............................................................................................. 10 Changes to Ordering Guide .......................................................... 11 7/06—Revision 0: Initial Version   ESD Caution...................................................................................4   ...

Page 3

... (ADM4073T (ADM4073F (ADM4073H 100 mV SENSE = RS+ ADM4073 1 = 25° LOAD = 5 pF LOAD ...

Page 4

... ADM4073 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter V to GND CC RS+, RS− to GND OUT to GND OUT Short-Circuit to GND Differential Input Voltage (V − RS+ RS− Current into Any Pin Storage Temperature Range Operating Temperature Range Lead Temperature, Soldering (10 sec) Junction Temperature Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 5

... Power-Side Connection to the External Sense Resistor. 5 RS− Load-Side Connection to the External Sense Resistor. 6 OUT Voltage Output. V GND OUT 1 6 TOP VIEW GND RS– (Not to Scale Figure 3. Pin Configuration is proportional Output impedance is approximately 12 kΩ. OUT SENSE Rev Page ADM4073 ...

Page 6

... RS+ Figure 8. Supply Current vs. RS+ Voltage (V SENSE 1 100mV SENSE 0.8 0.6 ADM4073F 0.4 ADM4073T 0.2 0 ADM4073H –0.2 –0.4 –0.6 –0.8 –1 SUPPLY VOLTAGE (V) Figure 9. Total Output Error vs. Supply Voltage (V ADM4073H ADM4073T ADM4073F 6.25 mV) ADM4073H ADM4073F ADM4073T 100 mV 100 mV) SENSE ...

Page 7

... Rev Page ADM4073 – 100 125 TEMPERATURE (°C) Figure 13. Gain Accuracy vs. Temperature ADM4073H ADM4073F ADM4073T 0 50 100 TEMPERATURE (°C) − vs. Temperature CC OH ADM4073F ADM4073T ADM4073H 1 10 100 1000 FREQUENCY (kHz) Figure 15. PSRR vs. Frequency 150 ...

Page 8

... Figure 17. ADM4073T Small Signal Transient Response V SENSE 2.5mV/DIV OUT 125mV/DIV 1µs/DIV Figure 18. ADM4073F Small Signal Transient Response V SENSE 2.5mV/DIV OUT 250mV/DIV 1000 10000 Figure 19. ADM4073H Small Signal Transient Response 100mV V SENSE 95mV 45mV/DIV 2V OUT 1.9V 0.9V/DIV Figure 20. ADM4073T Large Signal Transient Response 100mV V SENSE 95mV ...

Page 9

... V SENSE 45mV/DIV OUT 4.7V/DIV 1µs/DIV Figure 22. ADM4073H Large Signal Transient Response SENSE 100mV/DIV OUT 600mV/DIV 1µs/DIV Figure 23. ADM4073T Overdrive Response 100mV V CC 6.25mV 2V/DIV 10V OUT 0.6V 1V/DIV Figure 24. ADM4073T Start-Up Delay 250mV 50mV Rev Page ...

Page 10

... OUT Figure 26. Using PCB Trace for Current Sensing OUTPUT (OUT) The output stage of the ADM4073 is a current source driving a pull-down resistance. To ensure optimum accuracy, care must be taken not to load this output externally. To minimize output errors, ensure OUT is connected to a high impedance input ...

Page 11

... Dimensions shown in millimeters Temperature Range Package Description −40°C to +125°C 6-Lead SOT-23 −40°C to +125°C 6-Lead SOT-23 6-Lead SOT-23 −40°C to +125°C 6-Lead SOT-23 −40°C to +125°C Rev Page ADM4073 10° 0.60 4° 0.45 0° 0.30 Package Option RJ-6 RJ-6 RJ-6 RJ-6 Branding ...

Page 12

... ADM4073 NOTES ©2006–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05131-0-10/08(A) Rev Page ...

Related keywords