参数资料
| 型号： | AD605ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/25页 |
| 文件大小： | 0K |
| 描述： | IC AMP VGA DUAL LN 40MA 16SOIC |
| 标准包装： | 1 |
| 系列： | X-AMP® |
| 放大器类型： | 可变增益 |
| 电路数： | 2 |
| 转换速率： | 170 V/µs |
| -3db带宽： | 40MHz |
| 电流 - 输入偏压： | 400nA |
| 电流 - 电源： | 18mA |
| 电流 - 输出 / 通道： | 40mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 775 (CN2011-ZH PDF) |
| 配用： | AD605-EVALZ-ND - BOARD EVALUATION FOR AD605 |
Dual, Low Noise, Single-Supply
Variable Gain Amplifier
AD605
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
1996–2008 Analog Devices, Inc. All rights reserved.
FEATURES
2 independent linear-in-dB channels
Input noise at maximum gain: 1.8 nV/√Hz, 2.7 pA/√Hz
Bandwidth: 40 MHz (3 dB)
Differential input
Absolute gain range programmable
14 dB to +34 dB (FBK shorted to OUT) through
0 dB to 48 dB (FBK open)
Variable gain scaling: 20 dB/V through 40 dB/V
Stable gain with temperature and supply variations
Single-ended unipolar gain control
Output common mode independently set
Power shutdown at lower end of gain control
Single 5 V supply
Low power: 90 mW/channel
Drives ADCs directly
APPLICATIONS
Ultrasound and sonar time-gain controls
High performance AGC systems
Signal measurement
FUNCTIONAL BLOCK DIAGRAM
PRECISION PASSIVE
INPUT ATTENUATOR
FIXED GAIN
AMPLIFIER
+34.4dB
DIFFERENTIAL
ATTENUATOR
0 TO –48.4dB
OUT
VOCM
VGN
VREF
+IN
–IN
GAIN
CONTROL
AND
SCALING
FBK
AD605
0
05
41
-00
1
Figure 1.
GENERAL DESCRIPTION
The AD605 is a low noise, accurate, dual-channel, linear-in-dB
variable gain amplifier (VGA), optimized for any application
requiring high performance, wide bandwidth variable gain
control. Operating from a single 5 V supply, the AD605 provides
differential inputs and unipolar gain control for ease of use.
Added flexibility is achieved with a user-determined gain range
and an external reference input that provide user-determined
gain scaling (dB/V).
The high performance linear-in-dB response of the AD605 is
achieved with the differential input, single-supply, exponential
amplifier (DSX-AMP) architecture. Each of the DSX-AMPs
comprises a variable attenuator of 0 dB to 48.4 dB followed by
a high speed, fixed-gain amplifier. The attenuator is based on a
7-stage R-1.5R ladder network. The attenuation between tap
points is 6.908 dB, and 48.360 dB for the entire ladder network.
The DSX-AMP architecture results in 1.8 nV/√Hz input noise
spectral density and accepts a ±2.0 V input signal when VOCM
is biased at VP/2.
Each independent channel of the AD605 provides a gain range
of 48 dB that can be optimized for the application. Gain ranges
between 14 dB to +34 dB and 0 dB to +48 dB can be selected
by a single resistor between Pin FBK and Pin OUT. The lower
and upper gain ranges are determined by shorting Pin FBK to
Pin OUT or leaving Pin FBK unconnected, respectively. The
two channels of the AD605 can be cascaded to provide 96 dB
of very accurate gain range in a monolithic package.
The gain control interface provides an input resistance of
approximately 2 MΩ and scale factors from 20 dB/V to 30 dB/V
for a VREF input voltage of 2.5 V to 1.67 V, respectively. Note
that scale factors up to 40 dB/V are achievable with reduced
accuracy for scales above 30 dB/V. The gain scales linearly in dB
with control voltages (VGN) of 0.4 V to 2.4 V for the 20 dB/V
scale and 0.20 V to 1.20 V for the 40 dB/V scale. When VGN is
<50 mV, the amplifier is powered down to draw 1.9 mA. Under
normal operation, the quiescent supply current of each amplifier
channel is only 18 mA.
The AD605 is available in a 16-lead PDIP and a 16-lead SOIC_N
package and is guaranteed for operation over the 40°C to +85°C
temperature range.
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相关代理商/技术参数 |
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| AD605ARZ-R7 | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:3.5 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:30pA 电压 - 输入偏移:2000µV 电流 - 电源:200µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| AD605ARZ-RL | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:3.5 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:30pA 电压 - 输入偏移:2000µV 电流 - 电源:200µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| AD605ARZ-RL7 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, Low Noise, Single-Supply Variable Gain Amplifier |
| AD605B | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, Low Noise, Single-Supply Variable Gain Amplifier |
| AD605BN | 功能描述:IC AMP VGA DUAL LN LP 40MA 16DIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 标准包装:2,500 系列:Excalibur™ 放大器类型:J-FET 电路数:1 输出类型:- 转换速率:45 V/µs 增益带宽积:10MHz -3db带宽:- 电流 - 输入偏压:20pA 电压 - 输入偏移:490µV 电流 - 电源:1.7mA 电流 - 输出 / 通道:48mA 电压 - 电源，单路/双路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOIC 包装:带卷 (TR) |
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