AD8031B Analog Devices, AD8031B Datasheet
AD8031B
Manufacturer Part Number
AD8031B
Description
2.7 V/ 800 uA/ 80 MHz Rail-to-Rail I/O Amplifiers
Manufacturer
Analog Devices
Datasheet
1.AD8031B.pdf
(16 pages)
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a
GENERAL DESCRIPTION
The AD8031 (single) and AD8032 (dual) single supply voltage
feedback amplifiers feature high-speed performance with 80 MHz
of small signal bandwidth, 30 V/ s slew rate and 125 ns settling
time. This performance is possible while consuming less than
4.0 mW of power from a single +5 V supply. These features
increase the operation time of high speed battery-powered
systems without compromising dynamic performance.
The products have true single supply capability with rail-to-rail
input and output characteristics and are specified for +2.7 V,
+5 V and 5 V supplies. The input voltage range can extend to
500 mV beyond each rail. The output voltage swings to within
20 mV of each rail providing the maximum output dynamic range.
The AD8031/AD8032 also offer excellent signal quality for only
800 A of supply current per amplifier; THD is –62 dBc with a
2 V p-p, 1 MHz output signal and –86 dBc for a 100 kHz, 4.6 V p-p
signal on +5 V supply. The low distortion and fast settling time
make them ideal as buffers to single supply, A-to-D converters.
Operating on supplies from +2.7 V to +12 V and dual supplies up to
from battery-operated systems with large bandwidth requirements
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
6 V, the AD8031/AD8032 are ideal for a wide range of applications,
FEATURES
Low Power
High Speed and Fast Settling on +5 V
Rail-to-Rail Input and Output
Low Distortion
Output Current: 15 mA
High Grade Option
APPLICATIONS
High-Speed Battery-Operated Systems
High Component Density Systems
Portable Test Instruments
A/D Buffer
Active Filters
High-Speed Set-and-Demand Amplifier
Supply Current 800 A/Amplifier
Fully Specified at +2.7 V, +5 V and
80 MHz –3 dB Bandwidth (G = +1)
30 V/ s Slew Rate
125 ns Settling Time to 0.1%
No Phase Reversal with Input 0.5 V Beyond Supplies
Input CMVR Extends Beyond Rails by 200 mV
Output Swing to Within 20 mV of Either Rail
–62 dB @ 1 MHz, V
–86 dB @ 100 kHz, V
V
OS
(max) = 1.5 mV
O
O
= 2 V p-p
= 4.6 V p-p
5 V Supplies
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
to high-speed systems where component density requires lower
power dissipation. The AD8031/AD8032 are available in 8-lead
plastic DIP and SOIC packages and will operate over the indus-
trial temperature range of –40 C to +85 C. The AD8031A is also
available in the space-saving 5-lead SOT-23-5 package and the
AD8032A is available in AN 8-lead SOIC package.
and SOIC (R) Packages
8-Lead Plastic DIP (N)
–V
+IN
–IN
NC
S
1
2
3
4
Figure 1. Rail-to-Rail Performance at 100 kHz
NC = NO CONNECT
AD8031
5-Lead Plastic Surface Mount Package
Rail-to-Rail I/O Amplifiers
Input V
V
IN
2 s/Div
CONNECTION DIAGRAMS
2.7 V, 800 A, 80 MHz
8
7
6
5
World Wide Web Site: http://www.analog.com
V
IN
OUT
–V
+IN
NC
+V
OUT
NC
SOT-23-5 (RT-5)
+5V
S
Circuit Diagram
S
1
2
3
(Not to Scale)
AD8031/AD8032
AD8031
1k
SOIC (R) and SOIC (RM)
8-Lead Plastic DIP (N),
OUT1
–IN1
+IN1
–V
© Analog Devices, Inc., 1999
5
4
S
+V
–IN
1.7pF
4
1
2
3
S
Output V
AD8032
Packages
2 s/Div
+2.5V
V
OUT
OUT
8
7
6
5
+V
OUT2
–IN2
+IN2
S
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