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MFG:ADI D/C:09
Part Number: AD8138
MFG: ADI
D/C: 09
Description: AD8138 is a major advancement over op amps for differential signal processing. The AD8138 can be used as a single...
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AD8138
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DataSheet
General Description
AD8138 General 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 ampli-fier. The AD8138 is as easy to use as an op amp, and greatly simplifies differential signal amplification and driving.
Manufactured on ADI's proprietary XFCB bipolar process, th AD8138 has a (R)C3 dB bandwidth of 320 MHz and delivers 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 inter-nal feedback circuit also minimizes any gain error that would be associated 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 VOCMpin, 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 IP 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 pro- cessing and data acquisition applications.
The AD8138 is offered in an 8-lead SOIC that operates over the industrial temperature range of -40 to +85.
AD8138 Maximum Ratings
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5.5 V
V OCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . .550 mW
JA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... 155/W
Operating Temperature Range . . . . . . . . . . . ...-40 to +85
Storage Temperature Range . . . . . . . . . . . . ..-65 to +150
Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . ..+300
V OCM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±VS
Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . .550 mW
JA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... 155/W
Operating Temperature Range . . . . . . . . . . . ...-40 to +85
Storage Temperature Range . . . . . . . . . . . . ..-65 to +150
Lead Temperature (Soldering 10 sec) . . . . . . . . . . . . ..+300
AD8138 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 800 Load
-87 dBc--Second, -85 dBc--Third @ 20 MHz 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
Adjustable Output Common-Mode Voltage
Externally Adjustable Gain
Low Harmonic Distortion
-94 dBc--Second, <-114 dBc--Third @ 5 MHz 800 Load
-87 dBc--Second, -85 dBc--Third @ 20 MHz 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
AD8138 Typical Application
ADC Driver
Single-Ended-to-Differential Converter
IF and Baseband Gain Block
Differential Buffer
Line Driver
Single-Ended-to-Differential Converter
IF and Baseband Gain Block
Differential Buffer
Line Driver
AD8138 Connection Diagram
AD8138
PDF/DataSheet Download
- Datasheet: AD8138
- File Size: 269992 KB
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