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參數(shù)資料
| 型號(hào)： | AD813AR-REEL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | RECTIFIER SCHOTTKY DUAL 60A 60V 500A-ifsm 0.7V-vf 20mA-ir TO-3P 30/TUBE |
| 中文描述： | 3 CHANNEL, VIDEO AMPLIFIER, PDSO14 |
| 封裝： | PLASTIC, SOIC-14 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 256K |
| 代理商： | AD813AR-REEL |
REV. C
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
AD8138
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2001
Low Distortion
Differential ADC Driver
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
8
7
6
5
AD8138
NC
V
OCM
–OUT
V+
NC = NO CONNECT
+IN
V–
–IN
+OUT
FEATURES
Easy to Use Single-Ended-to-Differential Conversion
Adjustable Output Common-Mode Voltage
Externally Adjustable Gain
Low Harmonic Distortion
–94 dBc—Second, <–114 dBc—Third @ 5 MHz into
800 Load
–87 dBc—Second, –85 dBc—Third @ 20 MHz into
800 Load
–3 dB Bandwidth of 320 MHz, G = +1
Fast Settling to 0.01% of 16 ns
Slew Rate 1150 V/ s
Fast Overdrive Recovery of 4 ns
Low Input Voltage Noise of 5 nV/
√
Hz
1 mV Typical Offset Voltage
Wide Supply Range +3 V to 5 V
Low Power 90 mW on 5 V
0.1 dB Gain Flatness to 40 MHz
Available in 8-Lead SOIC and MICRO_SOIC
APPLICATIONS
ADC Driver
Single-Ended-to-Differential Converter
IF and Baseband Gain Block
Differential Buffer
Line Driver
PRODUCT DESCRIPTION
AD8138 is a major advancement over op amps for differential
signal processing. The AD8138 can be used as a single-ended-
to-differential amplifier or as a differential-to-differential amplifier.
The AD8138 is as easy to use as an op amp, and greatly simpli-
fies differential signal amplification and driving.
Manufactured on ADI’s proprietary XFCB bipolar process, the
AD8138 has a –3 dB bandwidth of 320 MHz and delivers a
differential signal with the lowest harmonic distortion available
in a differential amplifier. The AD8138 has a unique internal
feedback feature that provides output gain and phase matching
that are balanced, suppressing even order harmonics. The internal
feedback circuit also minimizes any gain error that would be asso-
ciated with the mismatches in the external gain setting resistors.
The AD8138’s differential output helps balance the input-to-
differential ADCs, maximizing the performance of the ADC.
The AD8138 eliminates the need for a transformer with high
performance ADCs, preserving the low frequency and dc infor-
mation. The common-mode level of the differential output is
adjustable by a voltage on the V
OCM
pin, easily level-shifting
the input signals for driving single supply ADCs. Fast overload
recovery preserves sampling accuracy.
The AD8138 distortion performance makes it an ideal ADC
driver for communication systems, with distortion performance
good enough to drive state-of-the-art 10- to 16-bit converters
at high frequencies. The AD8138’s high bandwidth and IP3
also make it appropriate for use as a gain block in IF and
baseband signal chains. The AD8138 offset and dynamic per-
formance make it well suited for a wide variety of signal
processing and data acquisition applications.
The AD8138 is available in both SOIC and MICRO_SOIC
packages for operation over –40
°
C to +85
°
C temperatures.
TYPICAL APPLICATION CIRCUIT
AIN
AIN
AVDD
DVDD
AVSS
V
REF
ADC
499
499
499
499
V
IN
V
OCM
+5V
+5V
DIGITAL
OUTPUTS
AD8138
–
+
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