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The 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 simplifies 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 balanced output gain and phase matching, suppressing even order harmonics. The internal 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 information. 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-bit 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 performance make it well suited for a wide variety of signal processing and data acquisition applications.

The AD8138 is available in both SOIC and MSOP packages for operation over -40°C to +85°C temperatures.

Part#	-3 dB BW (MHz)	Minimum Gain (Acl)	Voltage Supply (V)	Supply Current (max)	Slew Rate (V/us)	Distortion (2nd) (dBc)	Distortion (3rd) (dBc)	Package	Price* (1000-4999)
AD6630	700	-	+/- 5	30mA	3700	-	-	16-Lead SOIC	$4.18
AD8132	350	1	+/- 5	10.7mA	1200	-97	-100	8-Lead MSOP, 8-Lead SOIC	$1.67
AD8137	110	1	+/- 6	3.6mA	450	-85	-85	8-Lead SOIC	$1.10
AD8138	320	1	+/- 5	20mA	1500	-94	-114	8-Lead CSP, 8-Lead SOIC	$3.80
AD8139	410	1	5 to 12	24.5mA	800	-90	-105	8-Lead CSP, 8-Lead SOIC	$3.63
AD8350	900	-	4 to 11	32mA	2000	-67	-70	8-Lead SOIC/8-Lead uSOIC	$2.52
AD8351	2200	1	3 to 5.5	32mA	13000	-79	-81	10-Lead uSOIC	$2.68
AD8352	2200	-	3 to 5.5	37mA	11000	-81	-82	16-Lead LFCSP	$3.53
ADA4922-1	38	1	+/- 12	9.4mA	730	-116	-109	-	$3.63
ADA4937-1	1900	1	-	39.5mA	6000	-70	-84	16-Lead LFCSP	$3.84
ADA4939-1	1400	2	3 to 5	37.7mA	6800	-77	-95	16-Lead LFCSP	$3.84
ADA4939-2	1400	2	3 to 5	37.7mA	6800	-77	-91	16-Lead LFCSP	$5.76
ADA4941-1	30	2	-	2.3mA	22	-75	-71	8-Lead LFCSP, 8-Lead SOIC	$2.42

* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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这种集成电路（IC）的封装说明，例如：DIP，SOIC和BGA封装。评估板是一块用来演示器件性能的试验板，该器件也包含在该评估板上。

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这是指该器件允许的工作温度范围。以下为所规定的三种温度范围：

• 民用温度范围：0 ºC～＋70 ºC
• 军用温度范围：－55ºC ～＋125ºC
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• 汽车工作温度范围：-40 ℃～ +125 ℃

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