ad8235 Analog Devices, Inc., ad8235 Datasheet

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ad8235

Manufacturer Part Number
ad8235
Description
40 ?a Micropower Instrumentation Amplifier In Wlcsp Package
Manufacturer
Analog Devices, Inc.
Datasheet

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Part Number:
ad8235ACBZ-P7
Manufacturer:
AMCC
Quantity:
65
Preliminary Technical Data
FEATURES
Low power
Space-saving 1.6mm X2mm WLCSP package
Low input currents
High CMRR
Zero input cross-over distortion
Rail-to-rail input and output
Gain set with single resistor
APPLICATIONS
Medical instrumentation
Low side current sense
Portable devices
GENERAL DESCRIPTION
The AD8235 is the world’s smallest and world’s lowest power
instrumentation amplifier. It has rail-to-rail outputs and can
operate on voltages as low as 1.8 V. Its 40 μA maximum supply
current and 6nA maximum supply current in shutdown makes
it an excellent choice in battery-powered applications.
The AD8235 is an excellent choice for signal conditioning. Its low
input bias current of 1 pA and high CMRR of 110 dB (G = 100)
offer tremendous value for its size and low power. It has a wider
common-mode voltage range than typical three-op-amp
instrumentation amplifiers, making this a great solution for
applications that operate on a single 1.8 V or 3 V supply. An
innovative input stage allows for a wide rail-to-rail input voltage
range without the cross-over distortion common in other
designs.
Rev. PrA
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.
40 μA supply current (max)
6 nA shutdown current
1 pA input bias current
0.5 pA input offset current
110 dB CMRR, G = 100
40 μA Micropower Instrumentation
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The AD8235 is available in a wafer level chip scale package and
is specified over the industrial temperature range of −40°C to
+125°C.
General
Purpose
AD8220
AD8221
AD8222
AD8220
AD8228
AD8295
Amplifier in WLCSP Package
4.5
3.5
2.5
1.5
0.5
B1
OUT
A1
+VS
D1
-VS
C1
REF
5
4
3
2
1
0
-0.5
Figure 2. Wide Common-Mode Voltage Range vs.
Zero
Drift
AD8230
AD8231
AD8290
AD8293G80
AD8293G160
AD8553
AD8556
AD8557
A2
SDN
B2
NC
D2
NC
0
G=5
Vs = 1.8V
Vref = 0.9V
G=5
Vs = 5V
Vref = 2.5V
BALL CONFIGURATION
0.5
D3
+IN
A3
-IN
B3
RG
C3
RG
1
©2009 Analog Devices, Inc. All rights reserved.
(Top View)
Output Voltage
1.5
Output Voltage (V)
Military
Grade
AD620
AD621
AD624
AD524
AD526
Figure 1.
2
Pin Identifier
A1
A2
A3
B1
B2
B3
C1
C2
C3
D1
D2
D3
2.5
3
Low
Power
AD8235
AD627
AD623
AD8223
AD8226
3.5
(Top View - bumps
face down)
SDN
OUT
NC
RG
REF
Ball is not present
RG
NC
+Vs
-IN
-Vs
+IN
AD8235
www.analog.com
4
High Speed
PGA
AD8250
AD8251
AD8253
4.5
5
5.5

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ad8235 Summary of contents

Page 1

... Vs = 1.8V Vref = 0.9V 0.5 0 -0.5 0 0.5 1 1.5 Output Voltage (V) Figure 2. Wide Common-Mode Voltage Range vs. Output Voltage The AD8235 is available in a wafer level chip scale package and is specified over the industrial temperature range of −40°C to +125°C. General Zero Military Purpose Drift Grade AD8220 AD8230 AD620 AD8221 ...

Page 2

... AD8235 SPECIFICATIONS + − (GND 2 REF Table 1. Parameter COMMON-MODE REJECTION RATIO (CMRR) CMRR 100 G = 200 NOISE Voltage Noise Spectral Density, RTI RTI, 0 200 Current Noise VOLTAGE OFFSET Input Offset Average TC Offset RTI vs. Supply (PSR) ...

Page 3

... Operating Range Quiescent Current Over Temperature TEMPERATURE RANGE For Specified Performance 1 The AD8235 was designed for low to mid-range gains. Gains can certainly be set beyond 200. Test Conditions Min kΩ or 100 kΩ kΩ or 100 kΩ kΩ or 100 kΩ kΩ or 100 kΩ ...

Page 4

... 100 GAIN Gain Range Gain Error 100 1 The AD8235 was designed for low to mid-range gains. Gains can certainly be set beyond 200. = 25° 100 kΩ to GND, unless otherwise noted Test Conditions 1kHz 1. −40°C to +85°C − ...

Page 5

... kΩ to GND 1.65 L −40°C to +125°C 1. 100 kΩ to GND L −40°C to +125° kΩ to GND L −40°C to +125°C −IN, + −V S 1.8 −40 Rev. PrA | Page AD8235 Typ Max Unit 0.15 0 ppm 1 10 ppm 0.5 10 ppm 0.4 10 ppm 0.25 1 ppm/°C -50 ppm/° ...

Page 6

... AD8235 OUTLINE DIMENSIONS (Top View) Ball 1 Identifier 1.610 ©2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. PR08211-0-4/09(PrA) 2.080 0.380* 0.355 0.330 0.270 0.240 0.210 0.075 Coplanarity Figure 3. Wafer Level Chip Scale Package (WLCSP) ...

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