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| 型號： | AD600ARZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/33頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP VGA DUAL LN 50MA 16SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | X-AMP® |
| 放大器類型： | 可變增益 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 275 V/µs |
| -3db帶寬： | 35MHz |
| 電流 - 輸入偏壓： | 350nA |
| 電流 - 電源： | 11mA |
| 電流 - 輸出 / 通道： | 50mA |
| 電壓 - 電源，單路/雙路(±)： | ±4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC W |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 774 (CN2011-ZH PDF) |
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AD600/AD602
LOW NOISE AGC AMPLIFIER WITH 80 dB GAIN
RANGE
This is a Class AB amplifier. As VIN increases in a positive
direction, Q1 conducts more heavily and its re becomes lower
while Q2 increases. Conversely, increasingly negative values of
VIN result in the re of Q2 decreasing, while the re of Q1 increases.
The design is chosen such that the net emitter resistance is
essentially independent of the instantaneous value of VIN,
resulting in moderately low distortion. Low values of resistance
and moderately high bias currents are important in achieving
the low noise, wide bandwidth, and low distortion of this
preamplifier. Heavy decoupling prevents noise on the power
supply lines from being conveyed to the input of the X-AMP.
Figure 37 provides an example of the ease with which the
AD600 can be connected as an AGC amplifier. A1 and A2 are
cascaded, with 6 dB of attenuation introduced by the 100 Ω
Resistor R1, while a time constant of 5 ns is formed by C1 and
the 50 Ω of net resistance at the input of A2. This has the dual
effect of lowering the overall gain range from 0 dB to +80 dB to
6 dB to +74 dB and introducing a single-pole, low-pass filter
with a 3 dB frequency of about 32 MHz. This ensures stability
at the maximum gain for a slight reduction in the overall
bandwidth. The C4 capacitor blocks the small dc offset voltage
at the output of A1 (which may otherwise saturate A2 at its
maximum gain) and introduces a high-pass corner at about
8 kHz, useful in eliminating low frequency noise and spurious
signals that can be present at the input.
Table 4. Measured Preamplifier Performance
Measurement
Value
Unit
Gain (f = 30 MHz)
6
dB
Bandwidth (3 dB)
250
MHz
Input Signal for 1 dB Compression
1
V p-p
Distortion
VIN = 200 mV p-p
HD2
0.27
%
HD3
0.14
%
VIN = 500 mV p-p
HD2
0.44
%
HD3
0.58
%
System Input Noise
1.03
nV/√Hz
Spectral Density (NSD)
(Preamp Plus X-AMP)
Input Resistance
1.4
kΩ
Input Capacitance
15
pF
Input Bias Current
±150
μA
Power Supply Voltage
±5
V
Quiescent Current
15
mA
Rev. F | Page 17 of 32
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
REF
A1
A2
+
–
+
–
AD600
C1HI
A1CM
A1OP
VPOS
VNEG
A2OP
A2CM
C2HI
C1LO
A1HI
A1LO
GAT1
GAT2
A2LO
A2HI
C2LO
R1
100
C4
0.1F
C1
100pF
+5V
R3
46.4k
R4
3.74k
RF
INPUT
C3
15pF
AD590
+5V
Q1
2N3904
FB
+5V
–5V
+5V DEC
–5V DEC
0.1F
POWER SUPPLY
DECOUPLING NETWORK
RF
OUTPUT
+5V DEC
–5V DEC
+
–
VPTAT
VG
300A
(AT 300K)
C2
1F
R2
806
1%
00
53
8-
03
5
Figure 37. This Accurate HF AGC Amplifier Uses Three Active Components
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AD600ARZ1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Dual, Low Noise, Wideband Variable Gain Amplifiers |
| AD600ARZ-R7 | 功能描述:IC AMP VGA DUAL LN 50MA 16SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 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) |
| AD600ARZ-RL | 功能描述:IC AMP VGA DUAL LN 50MA 16SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:X-AMP® 標(biāo)準(zhǔn)包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 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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| AD600EHDK42GMS | 制造商:Advanced Micro Devices 功能描述:EB E64 4C 600E AM3 45W - Trays |
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