AD AD8206 Precision, dual-channel difference amplifier Datasheet

OUT2
–VS
FUNCTIONAL BLOCK DIAGRAM
16
15
14
13
AD8270
–IN1 1
10k
10k
10k
10k
12 –IN2
10k
10k
10k
10k
10k
10k
–IN1 2
20k
5
20k
10 +IN2
9 +IN2
20k
6
7
8
REF2
20k
REF2
+IN1 4
REF1
+IN1 3
11 –IN2
REF1
With no external resistors:
Difference Amplifier: Gains: 0.5, 1, 2
Inverting Amplifier: Gains: 0.5, 1, 2
Noninverting Amplifier: Gains: 1.5, 2, 3
Set reference voltage at 0, +Vs/2, or +Vs
Excellent AC Specifications
10 MHz bandwidth
30V/μs slew rate
Low Distortion
-90 dBc @ 100 kHz, 20Vpp, 600 Ω load
High Accuracy DC Performance
0.05% gain accuracy
10 ppm gain drift
400 uV offset voltage
80 dB CMRR
Two channels in small 4 mm × 4 mm LFCSP
Supply current: 2.5 mA per channel
Supply range: ±2.5 V to ±18 V
OUT1
FEATURES
+VS
Preliminary Technical Data
Precision, Dual-Channel
Difference Amplifier
AD8270
Figure 1. AD8270 Dual Difference Amplifier
Table 1. Difference Amplifiers by Category
APPLICATIONS
Instrumentation Amplifier Building Block
Level Translator
Automatic Test Equipment
High Performance Audio
Sin/Cos Encoders
Low
Distortion
AD8270
AD8273
AMP03
High
Voltage
AD628
AD629
AD8212
Single Supply
Uni-directional
AD8202
AD8203
Single Supply
Bi-directional
AD8205
AD8206
AD8210
GENERAL DESCRIPTION
The AD8270 is a low distortion, dual-channel amplifier with
internal gain setting resistors. With no external components, it
can be configured as a high performance difference amplifier
(G=0.5, 1, or 2), inverting amplifier (G=0.5, 1, or 2) or noninverting amplifier (G=1.5, 2, or 3).
The AD8270 is the first dual difference amplifier in the small 4
mm × 4mm LFCSP. It requires the same board area as a typical
single difference amplifier. The smaller package allows a 2X
increase in channel density and a lower cost per channel, all
with no compromise in performance.
The AD8270 operates on both single and dual supplies and only
requires 2.5 mA maximum supply current for both amplifiers. It
is specified over the industrial temperature range of −40°C to
+85°C and is fully RoHS compliant.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.
Preliminary Technical Data
AD8270
SPECIFICATIONS
VS = ±15 V, VREF = 0 V, TA = 25°C, G = 1, RL = 2 kΩ, unless otherwise noted.
Table 2.
Parameter
DYNAMIC PERFORMANCE
Bandwidth
Slew Rate
Settling Time to 0.01%
Settling Time to 0.001%
NOISE/DISTORTION
Harmonic Distortion
Output Voltage Noise
(referred to input)
Conditions
Min
Power Supply Rejection
Ratio
Input Voltage Range
Impedance
Differential
Common Mode
Min
G=1
Typ
Max
Min
G=2
Typ
Max
Unit
15
30
700
800
10
30
800
900
5
30
850
950
MHz
V/μs
ns
ns
f = 1 kHz, VOUT= 20 Vpp
f = 10 kHz, VOUT= 20 Vpp
f = 100 kHz, VOUT= 20 Vpp
f = 0.1 Hz to 10 Hz
100
100
90
100
100
90
100
100
90
dBc
dBc
dBc
μV p-p
f = 1 kHz
45
30
16
nV/√Hz
10V Step on output
10V Step on output
GAIN
Gain Error
Gain Drift
Gain Nonlinearity
INPUT CHARACTERISTICS
Offset
Overtemperature
Drift
Common Mode Rejection
Ratio
G = 1/2
Typ
Max
DC to 10 kHz
74
1
10
0.05
10
40
1
10
0.05
10
40
1
10
0.05
10
40
%
ppm/°C
ppm
100
400
100
400
100
400
2
94
8
2
100
8
2
106
8
μV
μV
μV/°C
dB
80
86
DC to 10 kHz
dB
-15.4
15.4
-15.4
20
7.5
OUTPUT CHARACTERISTICS
Output Swing
-40°C<TA<85°C
15.4
-15.4
20
10
-13.5
-13
-13.5
-13
15.4
10
7.5
kΩ
kΩ
60
V
V
mA
-13.5
-13
Short circuit current limit
60
POWER SUPPLY
Supply Current
(per Amplifier)
2.5
3
2.5
3
2.5
3
mA
3
4
3
4
3
4
mA
-40°C<TA<85°C
60
V
Rev. PrA | Page 2 of 4
Preliminary Technical Data
AD
Rev. PrA | Page 3 of 4
Preliminary Technical Data
AD8222
OUTLINE DIMENSIONS
4.00
BSC SQ
0.60 MAX
12 13
3.75
BSC SQ
TOP VIEW
12° MAX
1.00
0.85
0.80
SEATING
0.30
PLANE
0.23
0.18
1
16
EXPOSED
PAD
0.65
BSC
4
8
9
PIN 1
INDICATOR
2.65
2.50 SQ
2.35
5
0.25 MIN
1.95 BCS
0.80 MAX
0.65 TYP
BOTTOM VIEW
0.05 MAX
0.02 NOM
COPLANARITY
0.20 REF
0.08
COMPLIANT TO JEDEC STANDARDS MO-220-VGGC.
Figure 2. 16-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
4 mm × 4 mm Body, Very Thin Quad
(CP-16-13)
Dimensions are shown in millimeters
©2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
PR06979-0-8/07(PrA)
Rev. PrA | Page 4 of 4
031006-A
PIN 1
INDICATOR
0.50
0.40
0.30
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