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參數(shù)資料
| 型號(hào)： | AD605B |
| 廠商： | Analog Devices, Inc. |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual, Low Noise, Single-Supply Variable Gain Amplifier |
| 中文描述： | 雙通道，低噪聲，單電源可變?cè)鲆娣糯笃?/td> |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 263K |
| 代理商： | AD605B |
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. Trademarks and
registered trademarks are the property of their respective owners.
a
AD605
Tel: 781/329-4700 Fax: 781/326-8703
www.analog.comDual, Low Noise, Single-Supply
Variable Gain Amplifier
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
FEATURES
Two 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 A/D Converters Directly
APPLICATIONS
Ultrasound and Sonar Time-Gain Control
High Performance AGC Systems
Signal Measurement
GENERAL DESCRIPTION
The AD605 is a low noise, accurate, dual channel, linear-in-dB
variable gain amplifier, which is optimized for any application
requiring high performance, wide bandwidth variable gain con-
trol. 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 which provides 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
comprise 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 will accept 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 which 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 pins FBK and OUT. The
lower and upper gain ranges are determined by shorting pin
FBK to 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 approxi-
mately 2 M
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 accu-
racy 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 16-lead PDIP and SOIC, and is
guaranteed for operation over the –40
°
C to +85
°
C tempera-
ture range.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD605BN | Dual, Low Noise, Single-Supply Variable Gain Amplifier |
| AD605BR | Dual, Low Noise, Single-Supply Variable Gain Amplifier |
| AD606JR-REEL | 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output |
| AD606-EB | 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output |
| AD606JN | 50 MHz, 80 dB Demodulating Logarithmic Amplifier with Limiter Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD605BN | 功能描述:IC AMP VGA DUAL LN LP 40MA 16DIP RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類(lèi)型:J-FET 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD605BR | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類(lèi)型:J-FET 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD605BR-REEL | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類(lèi)型:J-FET 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD605BR-REEL7 | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:否 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類(lèi)型:J-FET 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
| AD605BRZ | 功能描述:IC AMP VGA DUAL LN 40MA 16SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類(lèi)型:J-FET 電路數(shù):1 輸出類(lèi)型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOIC 包裝:帶卷 (TR) |
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