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PDF AD8031 Data sheet ( Hoja de datos )
| Número de pieza | AD8031 | |
| Descripción | Rail-to-Rail I/O Amplifiers | |
| Fabricantes | Analog Devices | |
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Data Sheet
FEATURES
Low power
Supply current 800 μA/amplifier
Fully specified at +2.7 V, +5 V, and ±5 V supplies
High speed and fast settling on 5 V
80 MHz, −3 dB bandwidth (G = +1)
30 V/μs slew rate
125 ns settling time to 0.1%
Rail-to-rail input and output
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
Low distortion
−62 dB @ 1 MHz, VO = 2 V p-p
−86 dB @ 100 kHz, VO = 4.6 V p-p
Output current: 15 mA
High grade option: VOS (maximum) = 1.5 mV
APPLICATIONS
High speed, battery-operated systems
High component density systems
Portable test instruments
A/D buffers
Active filters
High speed, set-and-demand amplifiers
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/μs 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 μA 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 ADCs.
Rev. G
Document Feedback
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
2.7 V, 800 μA, 80 MHz
Rail-to-Rail I/O Amplifiers
AD8031/AD8032
CONNECTION DIAGRAMS
NC 1
8 NC
–IN 2
+IN 3
–VS 4
–
+
AD8031
7 +VS
6 OUT
5 NC
NC = NO CONNECT
Figure 1. 8-Lead PDIP (N) and
SOIC_N (R)
OUT1 1
–IN1 2
+IN1 3
–VS 4
AD8032 8 +VS
–+
+–
7 OUT2
6 –IN2
5 +IN2
Figure 2. 8-Lead PDIP (N),
SOIC_N (R), and MSOP (RM)
VOUT 1
–VS 2
+IN 3
AD8031
5 +VS
+–
4 –IN
Figure 3. 5-Lead SOT-23 (RJ-5)
Operating on supplies from +2.7 V to +12 V and dual supplies
up to ±6 V, the AD8031/AD8032 are ideal for a wide range of
applications, from battery-operated systems with large bandwidth
requirements to high speed systems where component density
requires lower power dissipation. The AD8031/AD8032 are
available in 8-lead PDIP and 8-lead SOIC_N packages and
operate over the industrial temperature range of −40°C to
+85°C. The AD8031A is also available in the space-saving
5-lead SOT-23 package, and the AD8032A is available in an
8-lead MSOP package.
VIN = 4.85V p-p
VOUT = 4.65V p-p
G = +1
2µs/DIV
Figure 4. Input VIN
+5V
–
VIN +
2µs/DIV
Figure 5. Output VOUT
VOUT
1kΩ 1.7pF
+2.5V
Figure 6. Rail-to-Rail Performance at 100 kHz
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
AD8031/AD8032
±5 V SUPPLY
@ TA = 25°C, VS = ±5 V, RL = 1 kΩ to 0 V, RF = 2.5 kΩ, unless otherwise noted.
Table 3.
Parameter
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth
Slew Rate
Settling Time to 0.1%
DISTORTION/NOISE PERFORMANCE
Total Harmonic Distortion
Input Voltage Noise
Input Current Noise
Differential Gain
Differential Phase
Crosstalk (AD8032 Only)
DC PERFORMANCE
Input Offset Voltage
Offset Drift
Input Bias Current
Input Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Common-Mode Input Resistance
Differential Input Resistance
Input Capacitance
Input Voltage Range
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
Differential/Input Voltage
OUTPUT CHARACTERISTICS
Output Voltage Swing Low
Output Voltage Swing High
Output Voltage Swing Low
Output Voltage Swing High
Output Current
Short Circuit Current
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current per Amplifier
Power Supply Rejection Ratio
Conditions
G = +1, VO < 0.4 V p-p
G = −1, VO = 2 V step
G = −1, VO = 2 V step, CL = 10 pF
fC = 1 MHz, VO = 2 V p-p, G = +2
fC = 100 kHz, VO = 2 V p-p, G = +2
f = 1 kHz
f = 100 kHz
f = 1 kHz
RL = 1 kΩ
RL = 1 kΩ
f = 5 MHz
VCM = 0 V; VOUT = 0 V
TMIN to TMAX
VCM = 0 V; VOUT = 0 V
VCM = 0 V; VOUT = 0 V
TMIN to TMAX
VCM = 0 V; VOUT = ±2 V
TMIN to TMAX
VCM = −5 V to +5 V
VCM = −5 V to +3.5 V
RL = 10 kΩ
RL = 1 kΩ
Sourcing
Sinking
G = +2 (See Figure 46)
VS− = −5 V to −6 V or
VS+ = +5 V to +6 V
AD8031A/AD8032A
Min Typ
Max
54 80
30 35
125
−62
−86
15
0.4
5
0.15
0.15
−60
±1 ±6
±6 ±10
5
0.45 1.2
2.0
50 350
76 80
74
40
280
1.6
−5.5 to
+5.5
−5.2 to
+5.2
60 80
66 90
3.4
−4.94
+4.94
−4.7
+4.7
−4.98
+4.98
−4.85
+4.75
15
35
−50
15
±1.35
76
900
86
±6
1600
AD8031B/AD8032B
Min Typ
Max
54 80
30 35
125
−62
−86
15
0.4
5
0.15
0.15
−60
±0.5 ±1.5
±1.6 ±2.5
5
0.45 1.2
2.0
50 250
76 80
74
40
280
1.6
−5.5 to
+5.5
−5.2 to
+5.2
60 80
66 90
3.4
−4.94
+4.94
−4.7
+4.7
−4.98
+4.98
−4.85
+4.75
15
35
−50
15
±1.35
76
900
86
±6
1600
Unit
MHz
V/µs
ns
dBc
dBc
nV/√Hz
pA/√Hz
pA/√Hz
%
Degrees
dB
mV
mV
µV/°C
µA
µA
nA
dB
dB
MΩ
kΩ
pF
V
V
dB
dB
V
V
V
V
V
mA
mA
mA
pF
V
µA
dB
Rev. G | Page 5 of 20
5 Page 
Data Sheet
10
VS = ±5V
8
6
VS = +5V
4
VS = +2.7V
2
0
1k 10k 100k 1M
FREQUENCY (Hz)
Figure 32. Large Signal Response
10M
100 RBT = 50Ω
50
10
1
0.1
RBT = 0Ω
RBT
VOUT
0.1 1
10
FREQUENCY (MHz)
Figure 33. ROUT vs. Frequency
100 200
0
VS = 5V
–20
–40
–60
–80
–100100
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 34. CMRR vs. Frequency
10M
AD8031/AD8032
0
–20
–40
–60
–80
–100
–120
100
VS = 5V
1k
10k 100k
1M
FREQUENCY (Hz)
Figure 35. PSRR vs. Frequency
10M
100M
5.5
4.5
3.5
2.5
1.5
0.5
–0.5
VS = 5V
RL = 10kΩ TO 2.5V
VIN = 6V p-p
G = +1
10µs/DIV
Figure 36. Output Voltage
INPUT
5.5
4.5
3.5
2.5
1.5
0.5
–0.5
VS = 5V
G = +1
INPUT = 650mV
BEYOND RAILS
10µs/DIV
Figure 37. Output Voltage Phase Reversal Behavior
Rev. G | Page 11 of 20
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AD8031.PDF ] | |
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