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ADA4950-1YCPZ-RL

更新时间： 2024-11-23 06:36:15

品牌	Logo	应用领域
亚德诺 - ADI		线路驱动器或接收器驱动程序和接口接口集成电路 PC
页数	文件大小	规格书
28页	678K
描述
Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3

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替代型号

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ADA4950-1YCPZ-RL 数据手册

Low Power, Selectable Gain

Differential ADC Driver, G = 1, 2, 3

ADA4950-1/ADA4950-2

FUNCTIONAL BLOCK DIAGRAMS

FEATURES

High performance at low power

High speed

−3 dB bandwidth of 750 MHz, G = 1

0.1 dB flatness to 210 MHz, V_{OUT, dm}= 2 V p-p, R_{L, dm}= 200 Ω

Slew rate: 2900 V/μs, 25% to 75%

Fast 0.1% settling time of 9 ns

ADA4950-1

12 PD

+INB

+INA

–INA

+INB

11 –OUT

10 +OUT

OCM

Low power: 9.5 mA per amplifier

Low harmonic distortion

108 dB SFDR @ 10 MHz

98 dB SFDR @ 20 MHz

Figure 1. ADA4950-1

Low output voltage noise: 9.2 nV/√Hz, G = 1, RTO

0.2 mV typical input offset voltage

Selectable differential gains of 1, 2, and 3

Differential-to-differential or single-ended-to-differential

operation

Adjustable output common-mode voltage

Input common-mode range shifted down by 1 V_BE

Wide supply range: +3 V to 5 V

–INA1

–INB1

18 +OUT1

17 V

OCM1

16 –V

ADA4950-2

–V

+INB2

+INA2

PD2

13 –OUT2

Available in 16-lead and 24-lead LFCSP packages

APPLICATIONS

ADC drivers

Figure 2. ADA4950-2

Single-ended-to-differential converters

IF and baseband gain blocks

Differential buffers

–40

–50

= 2V p-p

OUT, dm

Line drivers

–60

HD2, ±5V

HD3, ±5V

HD2, ±2.5V

HD3, ±2.5V

GENERAL DESCRIPTION

–70

The ADA4950-1/ADA4950-2 are gain-selectable versions of the

ADA4932-1/ADA4932-2 with on-chip feedback and gain resistors.

They are ideal choices for driving high performance ADCs as single-

ended-to-differential or differential-to-differential amplifiers. The

output common-mode voltage is user adjustable by means of an

internal common-mode feedback loop, allowing the ADA4950-1/

ADA4950-2 output to match the input of the ADC. The internal

feedback loop also provides exceptional output balance as well

as suppression of even-order harmonic distortion products.

–80

–90

–100

–110

–120

–130

–140

0.1

FREQUENCY (MHz)

100

Differential gain configurations of 1, 2, and 3 are easily realized

with internal feedback networks that are connected externally

to set the closed-loop gain of the amplifier.

Figure 3. Harmonic Distortion vs. Frequency at Various Supplies

The ADA4950-x is available in a Pb-free, 3 mm × 3 mm, 16-lead

LFCSP (ADA4950-1, single) or a Pb-free, 4 mm × 4 mm, 24-lead

LFCSP (ADA4950-2, dual). The pinout has been optimized to

facilitate PCB layout and minimize distortion. The ADA4950-1/

ADA4950-2 are specified to operate over the −40°C to +105°C

temperature range; both operate on supplies from +3 V to 5 V.

The ADA4950-1/ADA4950-2 are fabricated using the Analog

Devices, Inc., proprietary silicon-germanium (SiGe) complementary

bipolar process, enabling them to achieve low levels of distortion and

noise at low power consumption. The low offset and excellent

dynamic performance of the ADA4950-x make it well suited for

a wide variety of data acquisition and signal processing 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

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ADA4950-1YCPZ-RL 替代型号

型号	品牌	替代类型	描述	数据表
ADA4950-1YCPZ-R7	ADI	完全替代	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4950-1YCPZ-R2	ADI	完全替代	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4927-1YCPZ-R2	ADI	类似代替	Ultralow Distortion Current Feedback Differential ADC Driver

与ADA4950-1YCPZ-RL相关器件

型号	品牌	获取价格	描述	数据表
ADA4950-2	ADI	获取价格	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4950-2YCP-EBZ	ADI	获取价格	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4950-2YCPZ-R2	ADI	获取价格	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4950-2YCPZ-R7	ADI	获取价格	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4950-2YCPZ-RL	ADI	获取价格	Low Power, Selectable Gain Differential ADC Driver, G = 1, 2, 3
ADA4960-1	ADI	获取价格	Low Distortion Ultrahigh Speed Differential ADC Driver
ADA4960-1_17	ADI	获取价格	5 GHz, Low Distortion lADC Driver/Line Driver
ADA4960-1ACP-EBZ	ADI	获取价格	5 GHz, Low Distortion lADC Driver/Line Driver
ADA4960-1ACPZ-R2	ADI	获取价格	5 GHz, Low Distortion ADC Driver/Line Driver
ADA4960-1ACPZ-R7	ADI	获取价格	5 GHz, Low Distortion ADC Driver/Line Driver

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