參數(shù)資料
型號(hào): LT6402CUD-12#TRPBF
廠商: Linear Technology
文件頁(yè)數(shù): 2/16頁(yè)
文件大小: 0K
描述: IC DIFF AMP/ADC DVR 12DB 16-QFN
標(biāo)準(zhǔn)包裝: 2,500
放大器類型: 差分
電路數(shù): 2
輸出類型: 差分
轉(zhuǎn)換速率: 400 V/µs
-3db帶寬: 300MHz
電流 - 輸入偏壓: 5µA
電壓 - 輸入偏移: 1000µV
電流 - 電源: 30mA
電流 - 輸出 / 通道: 35mA
電壓 - 電源,單路/雙路(±): 4 V ~ 5.5 V,±2 V ~ 2.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 16-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-QFN-EP(3x3)
包裝: 帶卷 (TR)
LT6402-12
10
640212fa
Circuit Description
The LT6402-12 is a low noise, low distortion differential
amplier/ADC driver with:
–3dB bandwidth
DC to 300MHz
Fixed gain independent of RLOAD
4V/V (12dB)
Differential input impedance
100Ω
Low output impedance
Built-in, user adjustable output ltering
Requires minimal support circuitry
Referring to the block diagram, the LT6402-12 uses a
closed-loop topology which incorporates 3 internal am-
pliers. Two of the ampliers (A and B) are identical and
drive the differential outputs. The third amplier is used
to set the output common mode voltage. Gain and input
impedance are set by the 200Ω resistors in the internal
feedback network. Output impedance is low, determined
by the inherent output impedance of ampliers A and B,
and further reduced by internal feedback.
The LT6402-12 also includes built-in single-pole output
ltering. The user has the choice of using the unltered
outputs, the ltered outputs (75MHz –3dB lowpass), or
modifying the ltered outputs to alter frequency response
by adding additional components. Many lowpass and
bandpass lters are easily implemented with just one or
two additional components.
BLOCK DIAGRAM
+
14
–INA
5
+OUT
64026 BD
3
VCCA
10
VCCB
1
VCCC
11
ENABLE
13
–INB
14pF
VCCA
A
VEEA
50Ω
6
+OUTFILTERED
+
16
+INA
8
–OUT
15
+INB
VCCB
B
VEEB
100Ω
200Ω
50Ω
14pF
7
–OUTFILTERED
12
VEEC
9
VEEB
4
VEEA
+
VEEC
C
VCCC
2
VOCM
BIAS
APPLICATIONS INFORMATION
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