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參數(shù)資料
| 型號： | AD8368ACPZ-WP |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 0K |
| 描述： | IC AMP VGA 24LFCSP |
| 設計資源： | Extending the Dynamic Range of ADL5513 Logarithmic Detector Using AD8368 (CN0072) |
| 標準包裝： | 64 |
| 系列： | X-AMP® |
| 放大器類型： | 可變增益 |
| 電路數(shù)： | 1 |
| -3db帶寬： | 800MHz |
| 電流 - 電源： | 60mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-VFQFN 裸露焊盤，CSP |
| 供應商設備封裝： | 24-LFCSP-VQ（4x4） |
| 包裝： | 托盤 - 晶粒 |
AD8368
Rev. B | Page 13 of 20
GAIN CONTROL INTERFACE
The AD8368 has a linear-in-dB gain control interface that can
be operated in either a gain-up mode or gain-down mode. In
the gain-up mode with the MODE pin pulled high, the gain
increases with increasing gain voltages. In the gain-down mode,
with the MODE pin pulled low, the gain decreases with increasing
gain voltages. In both modes of operation, the gain control
slope is maintained at +37.5 dB/V or 38 dB/V (depending
on mode selection) over temperature, supply, and process as
VGAIN varies from 100 mV to 900 mV. To form an AGC loop
with the on-board detector around the VGA, the MODE pin
has to be pulled low.
The gain functions for MODE pulled high and low are given
respectively by
GainHIGH
(dB) = 37.5 × VGAIN 14
GainLOW
(dB) = 38 × VGAIN + 24.8
where VGAIN is expressed in volts.
25
–15
–10
–5
0
5
10
15
20
4
–4
–3
–2
–1
0
1
2
3
01
0.8
0.6
0.4
0.2
GA
IN
(
d
B
)
VGAIN (V)
05
90
7-
0
35
.0
GAIN_H
GAIN_L
ERROR_H
ERROR_L
C
O
NF
O
RM
ANC
E
RRO
R
(
d
B)
Figure 32. Gain and Conformance Error vs. VGAIN
As shown in Figure 32, the gain function can be either an
increasing or decreasing function of VGAIN, depending on the
MODE pin.
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相關代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8368-EVALZ | 制造商:Analog Devices 功能描述:EVAL BD 800 MHZ, LINEAR-IN-DB VGA W/ AGC DETECTOR - Bulk 制造商:Analog Devices 功能描述:EVALUATION BOARD KIT |
| AD8369 | 制造商:AD 制造商全稱:Analog Devices 功能描述:45 dB Digitally Controlled VGA LF to 600 MHz |
| AD8369ARM | 制造商:Analog Devices 功能描述:500 MHZ DIGITAL VGA - Bulk |
| AD8369ARU | 制造商:Analog Devices 功能描述:SP Amp Variable Gain Amp Single 5.5V 16-Pin TSSOP Tube 制造商:Rochester Electronics LLC 功能描述:TSSOP IF DIGITAL CONTROL VGA - Bulk 制造商:Analog Devices 功能描述:IC SEMICONDUCTOR ((NS)) |
| AD8369ARU-REEL | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
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