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參數資料
| 型號： | AD8139ARDZ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Noise Rail-to-Rail Differential ADC Driver |
| 中文描述： | OP-AMP, 500 uV OFFSET-MAX, PDSO8 |
| 封裝： | LEAD FREE, MS-012, SOIC-8 |
| 文件頁數： | 1/24頁 |
| 文件大小： | 720K |
| 代理商： | AD8139ARDZ-REEL7 |
Low Noise Rail-to-Rail
Differential ADC Driver
AD8139
FEATURES
Rev.
A
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.
Tel: 781.329.4700Fax: 781.326.8703
Fully differential Low noise
2.25 nV/√Hz
2.1 pA/√Hz
Low harmonic distortion
98 dBc SFDR @ 1 MHz
85 dBc SFDR @ 5 MHz
72 dBc SFDR @ 20 MHz
High speed
410 MHz, 3 dB BW (G = 1)
800 V/μs slew rate
45 ns settling time to 0.01%
69 dB output balance @ 1 MHz
80 dB dc CMRR
Low offset: ±0.5 mV max
Low input offset current: 0.5 μA max
Differential input and output
Differential-to-differential or single-ended-to-differential
operation
Rail-to-rail output
Adjustable output common-mode voltage
Wide supply voltage range: 5 V to 12 V
Available in small SOIC package
GENERAL DESCRIPTION
APPLICATIONS
ADC drivers to 18 bits
Single-ended-to-differential converters
Differential filters
Level shifters
Differential PCB board drivers
Differential cable drivers
FUNCTIONAL BLOCK DIAGRAM
0
–IN
1
V
OCM
2
V+
3
+OUT
4
+IN
8
NC
7
V–
6
–OUT
5
NC = NO CONNECT
AD8139
Figure 1.
The AD8139 is an ultralow noise, high performance differential
amplifier with rail-to-rail output. With its low noise, high SFDR,
and wide bandwidth, it is an ideal choice for driving ADCs with
resolutions to 18 bits. The AD8139 is easy to apply, and its in-
ternal common-mode feedback architecture allows its output
common-mode voltage to be controlled by the voltage applied
to one pin. The internal feedback loop also provides out-
standing output balance as well as suppression of even-order
harmonic distortion products. Fully differential and single-
ended-to-differential gain configurations are easily realized by
the AD8139. Simple external feedback networks consisting of a
total of four resistors determine the amplifier’s closed-loop gain.
The AD8139 is manufactured on ADI’s proprietary second gen-
eration XFCB process, enabling it to achieve low levels of distor-
tion with input voltage noise of only 1.85 nV/√Hz.
The AD8139 is available in an 8-lead SOIC package with an
exposed paddle (EP) on the underside of its body and a 3 mm ×
3 mm LFCSP. It is rated to operate over the temperature range
of 40°C to +125°C.
1
10
100
1k
10k
FREQUENCY (Hz)
100k
1M
10M
1G
100M
10
100
0
I
Figure 2. Input Voltage Noise vs. Frequency
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