参数资料
| 型号： | LT1994CDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/20页 |
| 文件大小： | 0K |
| 描述： | IC DIFF AMP/DRIVER LN 8-DFN |
| 标准包装： | 2,500 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 65 V/µs |
| 增益带宽积： | 70MHz |
| 电流 - 输入偏压： | 18µA |
| 电压 - 输入偏移： | 3000µV |
| 电流 - 电源： | 14.8mA |
| 电流 - 输出 / 通道： | 85mA |
| 电压 - 电源，单路/双路(±)： | 2.375 V ~ 12.6 V，±1.188 V ~ 6.3 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN-EP（3x3） |
| 包装： | 带卷 (TR) |
17
1994fb
LT1994
Differential 1st Order Lowpass Filter
Maximum –3dB frequency (f3dB) 2MHz
Stopband attenuation: –6dB at 2 f3dB and 14dB at 5 f3dB
Example: The specied –3dB frequency is 1MHz Gain = 4
1. Using f3dB = 1000kHz, C11abs = 400pF
2. Nearest standard 5% value to 400pF is 390pF and C11
= C12 = 390pF
3. Using f3dB = 1000kHz, C11 = 390pF and Gain = 4, R21
= R22 = 412
Ω and R11 = R12 = 102Ω (nearest 1%
value)
Differential 2nd Order Butterworth Lowpass Filter
Maximum –3dB frequency (f3dB) 1MHz
Stopband attenuation: –12dB at 2 f3dB and –28dB at 5 f3dB
TYPICAL APPLICATIONS
+
–
+
V+
0.1μF
3
7
6
8
1
2
5
4
R21
C11
R12
R11
R22
C12
0.1μF
VIN
–
VIN
+
LT1994
VOUT
–
VOUT
+
1994 TA03
Component Calculation:
R11 = R12, R21 = R22
f
MHz and Gain
MHz
f
dB
3
2
≤≤
1. Calculate an absolute value for C11 (C11abs) using a
specied –3dB frequency
C
f
C
inpF and f
inkHz
abs
dB
abs
dB
11
410
11
5
3
=
()
2. Select a standard 5% capacitor value nearest the absolute
value for C11
3. Calculate R11 and R21 using the standard 5% C11
value, f3dB and desired gain
R11 and R21 equations (C11 in pF and f3dB in kHz)
R
Cf
R
Gain
dB
21
159 2 10
11
21
6
3
=
.
+
–
+
V+
0.1μF
3
7
6
8
1
2
5
4
R32
R31
C21
R12
R11
0.1μF
C11
VIN
–
VIN
+
LT1994
VOUT
–
VOUT
+
1994 TA04
R22
R21
C22
Component Calculation:
R11 = R12, R21 = R22, R31 = R32, C21 = C22,
C11 = 10 C21, R1 = R11, R2 = R21, R3 = R31,
C2 = C21 and C1 = C11
1. Calculate an absolute value for C2 (C2abs) using a
specied –3dB frequency
C
f
C
inpF and f
inkHz Note
abs
dB
abs
dB
2
410
2
5
3
=
() (
2
2)
2. Select a standard 5% capacitor value nearest the absolute
value for C2 (C1 = 10 C2)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1994CMS8 | 制造商:Linear Technology 功能描述:SP Amp DIFF AMP Single R-R O/P ±6.3V/12.6V 8-Pin MSOP |
| LT1994CMS8#PBF | 功能描述:IC DIFF AMP/DRIVER LN 8-MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LT1994CMS8#TR | 制造商:Linear Technology 功能描述:DIFF-AMPLIFIER, 70MHZ, 65V/US, MSOP-8, No. of Amplifiers:1, Input Offset Voltage 制造商:Linear Technology 功能描述:DIFF-AMPLIFIER, 70MHZ, 65V/US, MSOP-8, No. of Amplifiers:1, Input Offset Voltage:2mV, Bandwidth:70MHz, Amplifier Case Style:MSOP, No. of Pins:8, Supply Voltage Range:2.375V to 12.6V, Slew Rate:65V/s, Supply Current:14.8mA, MSL:- , RoHS Compliant: No |
| LT1994CMS8#TRPBF | 功能描述:IC DIFF AMP/DRIVER LN 8-MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:50 系列:- 放大器类型:通用 电路数:2 输出类型:满摆幅 转换速率:1.8 V/µs 增益带宽积:6.5MHz -3db带宽:4.5MHz 电流 - 输入偏压:5nA 电压 - 输入偏移:100µV 电流 - 电源:65µA 电流 - 输出 / 通道:35mA 电压 - 电源，单路/双路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-MSOP 包装:管件 |
| LT1994CMS8PBF | 制造商:Linear Technology 功能描述:Differential Amp RRO +/-6.3V/12.6V MSOP8 |
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