AD8648ARUZ [ADI]
Low Cost, 24 MHz, Rail-to-Rail, Quad Amplifiers; 低成本， 24兆赫，轨到轨，四通道放大器
| 型号： | AD8648ARUZ |
| 厂家： | 
ADI |
| 描述： | Low Cost, 24 MHz, Rail-to-Rail, Quad Amplifiers |
| 文件： | 总12页 (文件大小：338K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Low Cost, 24 MHz, Rail-to-Rail,
Quad Amplifiers
AD8648
FEATURES
PIN CONFIGURATIONS
Low offset voltage: 2.5 mV max
Single-supply operation: 2.7 V to 5.5 V
Low noise: 6 nV/√Hz
Wide bandwidth: 24 MHz
Slew rate: 12 V/μs
1
2
3
4
5
6
7
OUT A
–IN A
+IN A
V+
14
13
OUT D
–IN D
AD8648
TOP VIEW
(Not to Scale)
12 +IN D
11
V–
+IN B
–IN B
OUT B
10 +IN C
High output current: 150 mA
No phase reversal
9
–IN C
8
OUT C
Low input bias current: 1 pA
Low supply current: 2 mA max
Unity-gain stable
Figure 1. 14-Lead TSSOP (RU-14)
OUT A
–IN A
+IN A
V+
1
2
3
4
5
6
7
14 OUT D
13 –IN D
12 +IN D
11 V–
APPLICATIONS
Barcode scanners
Battery-powered instrumentation
Multipole filters
AD8648
TOP VIEW
(Not to Scale)
+IN B
–IN B
OUT B
10 +IN C
9
8
–IN C
OUT C
Sensors
ASIC input or output amplifiers
Audio
Figure 2. 14-Lead SOIC (R-14)
Photodiode amplification
GENERAL DESCRIPTION
The AD8648 is a quad, rail-to-rail, input and output, single-
supply amplifier featuring low offset voltage, wide signal
bandwidth, and low input voltage and current noise.
Applications for the part include portable and low powered
instrumentation, audio amplification for portable devices,
portable phone headsets, bar code scanners, and multipole
filters. The ability to swing rail to rail at both the input and
output enables designers to buffer CMOS ADCs, DACs, ASICs,
and other wide output swing devices in single-supply systems.
The combination of 24 MHz bandwidth, low offset, low noise,
and very low input bias current makes these amplifiers useful in
a wide variety of applications. Filters, integrators, photodiode
amplifiers, and high impedance sensors all benefit from the
combination of performance features. AC applications benefit
from the wide bandwidth and low distortion. The AD8648
family offers high output drive capability, which is excellent for
audio line drivers and other low impedance applications.
Rev. 0
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 registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2006 Analog Devices, Inc. All rights reserved.
AD8648
TABLE OF CONTENTS
Features .............................................................................................. 1
Absolute Maximum Ratings ............................................................5
Thermal Resistance.......................................................................5
ESD Caution...................................................................................5
Typical Performance Characteristics ..............................................6
Outline Dimensions....................................................................... 12
Ordering Guide .......................................................................... 12
Applications....................................................................................... 1
Pin Configurations ........................................................................... 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
REVISION HISTORY
1/06—Rev 0: Initial Version
Rev. 0 | Page 2 of 12
AD8648
SPECIFICATIONS
VDD = 5.0 V, VCM = VDD/2, TA = 25oC, unless otherwise noted.
Table 1.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
VCM = 0 V to 5 V
−40°C < TA < +125°C
−40°C < TA < +125°C
0.7
2.5
3.2
7.5
1
mV
mV
μV/°C
pA
Offset Voltage Drift
Input Bias Current
ΔVOS/ΔT
IB
2.0
0.2
−40°C < TA < +85°C
−40°C < TA < +125°C
50
550
0.5
50
250
5
pA
pA
pA
pA
pA
V
Input Offset Current
IOS
0.1
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Voltage Range
VCM
0
Common-Mode Rejection Ratio
Large-Signal Voltage Gain
Input Capacitance
CMRR
AVO
CDIFF
CCM
VCM = 0 V to 5.0 V
RL = 2 kΩ, VO = 0.5 V to 4.5 V
67
160
84
dB
V/mV
pF
700
2.5
6.7
pF
OUTPUT CHARACTERISTICS
Output Voltage High
VOH
IOUT = 1 mA
IOUT = 10 mA
−40°C < TA < +125°C
IOUT = 1 mA
IOUT = 10 mA
4.98
4.87
4.70
4.99
4.92
V
V
V
mV
mV
mV
mA
Ω
Output Voltage Low
VOL
8.4
78
20
145
200
−40°C < TA < +125°C
Short-Circuit Output Current
Closed-Loop Output Impedance
POWER SUPPLY
ISC
ZOUT
150
At 1 MHz, AV = 1
3
Power Supply Rejection Ratio
Supply Current per Amplifier
PSRR
ISY
VDD = 2.7 V to 5.5 V
−40°C < TA < +125°C
63
80
1.8
dB
mA
mA
2.0
2.5
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Gain Bandwidth Product
Phase Margin
SR
ts
GBP
ΦM
RL = 2 kΩ
To 0.01%
12
0.5
24
74
V/μs
μs
MHz
Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
en p-p
en
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 10 kHz
f = 100 kHz
2.4
8
6
−115
−110
μV
nV/√Hz
nV/√Hz
dB
Channel Separation
CS
dB
Rev. 0 | Page 3 of 12
AD8648
VDD = 2.7 V, VCM = VDD/2, TA = 25oC, unless otherwise noted.
Table 2.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
INPUT CHARACTERISTICS
Offset Voltage
VOS
VCM = 0 V to 2.7 V
−40°C < TA < +125°C
−40°C < TA < +125°C
0.7
2.5
3.2
7.0
1
mV
mV
μV/°C
pA
Offset Voltage Drift
Input Bias Current
ΔVOS/ΔT
IB
1.8
0.2
−40°C < TA < +85°C
−40°C < TA < +125°C
50
pA
pA
pA
pA
pA
V
550
0.5
50
250
2.7
Input Offset Current
IOS
0.1
−40°C < TA < +85°C
−40°C < TA < +125°C
Input Voltage Range
VCM
0
Common-Mode Rejection Ratio
Large-Signal Voltage Gain
Input Capacitance
CMRR
AVO
CDIFF
CCM
VCM = 0 V to 2.7 V
RL = 2 kΩ, VO = 0.5 V to 2.2 V
62
60
79
dB
V/mV
pF
130
2.5
7.8
pF
OUTPUT CHARACTERISTICS
Output Voltage High
VOH
VOL
IOUT = 1 mA
−40°C < TA < +125°C
IOUT = 1 mA
2.65
2.60
2.69
11
V
V
mV
mV
mA
Ω
Output Voltage Low
25
30
−40°C < TA < +125°C
Short-Circuit Output Current
Closed-Loop Output Impedance
POWER SUPPLY
ISC
ZOUT
50
3
At 1 MHz, AV = 1
Power Supply Rejection Ratio
Supply Current per Amplifier
PSRR
ISY
VDD = 2.7 V to 5.5 V
−40°C < TA < +125°C
63
80
1.7
dB
mA
mA
2.0
2.5
DYNAMIC PERFORMANCE
Slew Rate
Settling Time
Gain Bandwidth Product
Phase Margin
SR
ts
GBP
ΦM
RL = 2 kΩ
To 0.01%
12
0.3
22
52
V/μs
μs
MHz
Degrees
NOISE PERFORMANCE
Peak-to-Peak Noise
Voltage Noise Density
en p-p
en
0.1 Hz to 10 Hz
f = 1 kHz
f = 10 kHz
f = 10 kHz
f = 100 kHz
2.1
8
6
−115
−110
μV
nV/√Hz
nV/√Hz
dB
Channel Separation
CS
dB
Rev. 0 | Page 4 of 12
AD8648
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
Supply Voltage
Input Voltage
Differential Input Voltage
Output Short Circuit to GND
Storage Temperature Range
Operating Temperature Range
Lead Temperature (Soldering, 60 sec)
Junction Temperature
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Rating
6 V
GND to VDD
3 V
Indefinite
−65°C to +150°C
−40°C to +125°C
300°C
THERMAL RESISTANCE
150°C
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Table 4. Thermal Resistance
Package Type
θJA
θJC
36
35
Unit
°C/W
°C/W
14-Lead SOIC (R)
14-Lead TSSOP (RU)
120
180
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. 0 | Page 5 of 12
AD8648
TYPICAL PERFORMANCE CHARACTERISTICS
1000
100
10
140
V
= 2.7V TO 5V
V
V
= 5V
DD
DD
= 2.5V
T = 25°C
1400 AMPLIFIERS
CM
120
100
80
60
40
20
0
1
0.1
25
45
65
85
105
125
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE (mV)
Figure 6. Input Bias Current vs. Temperature
Figure 3. Input Offset Voltage Distribution
1000
100
10
30
25
20
15
10
5
V
= 5V
DD
V
V
= 5V
= 2.5V
DD
CM
T = 25°C
–40°C < T < +125°C
A
V
– V
OH
DD
SOURCING
V
OL
SINKING
1
0.1
0.001
0
0.01
0.1
1
10
100
0
1
2
3
4
5
6
7
TCVOS (µV/°C)
LOAD CURRENT (mA)
Figure 7. Output Saturation Voltage vs. Load Current
Figure 4. VOS Drift (TCVOS) Distribution
25
20
15
10
5
2500
2000
1500
1000
500
V
OUT
= 5V
DD
V
= 5V
DD
= 25°C
I
= 1mA
T
A
V
– V
OH
DD
SOURCING
0
–500
V
OL
SINKING
–1000
–1500
–2000
–2500
0
–40
–20
0
20
40
60
80
100
120
0
1
2
3
4
5
TEMPERATURE (°C)
INPUT COMMON-MODE VOLTAGE (V)
Figure 8. Output Saturation Voltage vs. Temperature
Figure 5. Input Offset Voltage vs. Input Common-Mode Voltage
Rev. 0 | Page 6 of 12
AD8648
100
80
60
40
20
80
60
0
V
= 5V
= 25°C
V
R
C
= 5V
DD
DD
T
A
= 1k
Ω
L
L
= 10pF
45
90
PHASE
40
20
135
180
225
270
Ф
= 74°
M
GAIN
0
–20
–40
1k
10k
100k
1M
10M
10k
100k
1M
FREQUENCY (Hz)
10M
100M
FREQUENCY (Hz)
Figure 12. Common-Mode Rejection Ratio vs. Frequency
Figure 9. Open-Loop Gain and Phase vs. Frequency
100
80
60
40
20
0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
T
= 5V
V
V
A
R
= 5V
= 4.9V p-p
= 1
= 10kΩ
= 25°C
PSRR+
DD
= 25°C
DD
IN
A
V
L
T
A
PSRR–
1k
10k
100k
1M
10M
100k
1M
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 10. Maximum Output Swing vs. Frequency
Figure 13. Power Supply Rejection Ratio vs. Frequency
1000
100
1000
100
10
V
= 2.7V TO 5V
DD
= 25°C
V
= 5V
DD
= 25°C
T
A
T
A
A
= 100
V
10
A
= 10
V
A
= 1
V
1
1
10
0.1
1K
100
1k
10k
10K
100K
1M
10M
100M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 14. Voltage Noise Density vs. Frequency
Figure 11. Closed-Loop Output Impedance vs. Frequency
Rev. 0 | Page 7 of 12
AD8648
0.1
V
V
= 5V
DD
= 300mV rms
IN
V
= 2.7V TO 5V
DD
= 25°C
BW = 80kHz
= 100kΩ
T
A
R
L
0.01
0.001
0.0001
20
100
1k
10k 20k
TIME (1s/DIV)
FREQUENCY (Hz)
Figure 15. 0.1 Hz to 10 Hz Voltage Noise
Figure 18. THD + Noise vs. Frequency
1
V
= 5V
= 10kΩ
= 20pF
= 1
DD
R
C
A
L
L
V
0.1
0.01
0.001
V
A
= 5V
DD
= 1
V
BW = 30kHz
R
= 100kΩ
f =L 1kHz
0.0001
0.001
0.01
0.1
1
TIME (40ns/DIV)
OUTPUT AMPLITUDE (V rms)
Figure 16. Small-Signal Transient Response
Figure 19. THD + Noise vs. Output Amplitude
70
V
= 5V
V
R
= 5V
= 10kΩ
= 25°C
DD
DD
R
C
A
= 100kΩ
= 20pF
= 1
L
L
V
L
T
60
50
40
30
20
10
A
OS+
OS–
0
10
100
LOAD CAPACITANCE (pF)
1000
TIME (200ns/DIV)
Figure 20. Small-Signal Overshoot vs. Load Capacitance
Figure 17. Large-Signal Transient Response
Rev. 0 | Page 8 of 12
AD8648
160
140
120
100
80
1000
100
V
V
= 2.7V
= 1.35V
= 25°C
DD
CM
V
= 2.7V
DD
= 25°C
T
A
T
A
1400 AMPLIFIERS
V
– V
OH
DD
SOURCING
10
1
V
OL
SINKING
60
40
20
0
–2.0
0.1
0.001
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
2.0
0.01
0.1
LOAD CURRENT (mA)
1
10
INPUT OFFSET VOLTAGE (mV)
Figure 21. Input Offset Voltage Distribution
Figure 24. Output Saturation Voltage vs. Load Current
30
25
20
15
10
5
25
20
15
10
5
V
V
= 2.7V
= 1.35V
V
I
= 2.7V
DD
CM
DD
= 1mA
LOAD
–40°C < T < +125°C
A
V
– V
OH
DD
SOURCING
V
OL
SINKING
0
0
–40
0
1
2
3
4
5
6
7
8
–20
0
20
40
60
80
100
120
TCV (µV/°C)
OS
TEMPERATURE (°C)
Figure 25. Output Saturation Voltage vs. Temperature
Figure 22. VOS Drift (TCVOS) Distribution
80
0
2500
2000
1500
1000
500
V
R
C
= 2.7V
= 1kΩ
= 10pF
V
= 2.7V
DD
DD
= 25°C
T
L
L
A
60
40
20
45
90
Ф
= 52°
M
135
0
–500
–1000
–1500
–2000
–2500
0
–20
–40
180
225
270
10k
100k
1M
10M
100M
0
0.5
1.0
1.5
2.0
2.5
3.0
FREQUENCY (Hz)
INPUT COMMON-MODE VOLTAGE (V)
Figure 26. Open-Loop Gain and Phase vs. Frequency
Figure 23. Input Offset Voltage vs. Input Common-Mode Voltage
Rev. 0 | Page 9 of 12
AD8648
100
80
60
40
20
0
3.0
V
= 2.7V
= 25°C
DD
V
V
A
R
= 2.7V
= 2.6V p-p
= 1
= 10kΩ
= 25°C
DD
IN
PSRR+
T
A
V
L
2.5
2.0
1.5
T
A
PSRR–
1.0
0.5
0
100k
1k
10k
100k
1M
10M
1M
10M
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 27. Maximum Output Swing vs. Frequency
Figure 30. Power Supply Rejection Ratio vs. Frequency
1000
100
10
V
T
= 2.7V
= 25°C
DD
V
= 2.7V
= 10kΩ
= 20pF
= 1
DD
R
C
A
A
L
L
V
A
= 100
V
A
= 10
V
A
= 1
V
1
0.1
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
TIME (40ns/DIV)
Figure 28. Closed-Loop Output Impedance vs. Frequency
Figure 31. Small-Signal Transient Response
100
80
60
40
20
V
= 2.7V
= 25°C
V
R
C
A
= 2.7V
DD
DD
T
= 10kΩ
= 20pF
= 1
A
L
L
V
1k
10k
100k
1M
10M
FREQUENCY (Hz)
TIME (1µs/DIV)
Figure 29. Common-Mode Rejection Ratio vs. Frequency
Figure 32. Large-Signal Transient Response
Rev. 0 | Page 10 of 12
AD8648
50
40
30
20
10
0
2.5
2.0
1.5
1.0
0.5
0
T
= 25°C
V
R
= 2.7V
= 10kΩ
= 25°C
A
DD
L
T
A
OS+
OS–
1
10
100
1000
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
LOAD CAPACITANCE (pF)
SUPPLY VOLTAGE (V)
Figure 33. Small-Signal Overshoot vs. Load Capacitance
Figure 35. Supply Current per Amplifier vs. Supply Voltage
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
V
= V /2
DD
OUT
V
= 2.7V
DD
V
= 5.0V
DD
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
Figure 34. Supply Current per Amplifier vs. Temperature
Rev. 0 | Page 11 of 12
AD8648
OUTLINE DIMENSIONS
5.10
5.00
4.90
14
8
7
4.50
4.40
4.30
6.40
BSC
1
PIN 1
0.65
BSC
1.05
1.00
0.80
0.20
0.09
1.20
MAX
0.75
0.60
0.45
8°
0°
0.15
0.05
0.30
0.19
SEATING
PLANE
COPLANARITY
0.10
COMPLIANT TO JEDEC STANDARDS MO-153-AB-1
Figure 36. 14-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-14)
Dimensions shown in millimeters
8.75 (0.3445)
8.55 (0.3366)
8
7
14
1
4.00 (0.1575)
3.80 (0.1496)
6.20 (0.2441)
5.80 (0.2283)
1.27 (0.0500)
BSC
0.50 (0.0197)
0.25 (0.0098)
1.75 (0.0689)
1.35 (0.0531)
× 45°
0.25 (0.0098)
0.10 (0.0039)
8°
0°
0.51 (0.0201)
0.31 (0.0122)
SEATING
PLANE
1.27 (0.0500)
0.40 (0.0157)
COPLANARITY
0.10
0.25 (0.0098)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012-AB
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 37. 14-Lead Standard Small Outline Package [SOIC_N]
Narrow Body (R-14)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Package Description
14-Lead SOIC_N
14-Lead SOIC_N
14-Lead SOIC_N
14-Lead TSSOP
Package Option
R-14
AD8648ARZ1
AD8648ARZ-REEL1
AD8648ARZ-REEL71
AD8648ARUZ1
R-14
R-14
RU-14
AD8648ARUZ-REEL1
14-Lead TSSOP
RU-14
1 Z = Pb-free part.
©2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05890–0–1/06(0)
Rev. 0 | Page 12 of 12
相关型号：
©2020 ICPDF网 联系我们和版权申明