- 您現(xiàn)在的位置：買賣IC網 > PDF目錄377694 > LT1220M (Linear Technology Corporation) 45MHz, 250V/us Operational Amplifier PDF資料下載
參數(shù)資料
| 型號： | LT1220M |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 45MHz, 250V/us Operational Amplifier |
| 中文描述： | 45MHz，250V/us運算放大器 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 290K |
| 代理商： | LT1220M |
7
LT1220
APPLICATIO
S I
FOR
ATIO
U
Input Considerations
Bias current cancellation circuitry is employed on the
inputs of the LT1220 so the input bias current and input
offset current have identical specifications. For this reason,
matching the impedance on the inputs to reduce bias
current errors is not necessary.
W
U
U
Capacitive Loading
The LT1220 is stable with capacitive loads. This is accom-
plished by sensing the load induced output pole and adding
compensation at the amplifier gain node. As the capacitive
load increases, both the bandwidth and phase margin
decrease. There will be peaking in the frequency domain as
shown in the curve of Frequency Response vs Capacitive
Load. The small-signal transient response will have more
overshoot as shown in the photo of the small-signal
response with 1000pF load. The large-signal response with
a 10,000pF load shows the output slew rate being limited
to 4V/
μ
s by the short-circuit current. The LT1220 can drive
coaxial cable directly, but for best pulse fidelity a resistor of
value equal to the characteristic impedance of the cable
(i.e., 75
) should be placed in series with the output. The
other end of the cable should be terminated with the same
value resistor to ground.
DAC Current-to-Voltage Amplifier
The high gain, low offset voltage, low input bias current,
and fast settling of the LT1220 make it particularly useful
as an I/V converter for current output DACs. A typical
application is shown with a 565A type, 12-bit, 2mA full-
scale output current DAC. The 5k resistor around the
LT1220 is internal to the DAC and gives a 10V full-scale
output voltage. A 5pF capacitor in parallel with the feedback
resistor compensates for the DAC output capacitance and
improves settling. The output of the LT1220 settles to
1/2LSB (1.2mV) in less than 300ns. The accuracy of this
circuit is equal to:
V
ERROR
= V
OS
+ (I
OS
×
5k
) + (V
OUT
/A
VOL
)
At room temperature the worst-case error is 3mV (1.2LSB).
Typically the error is 1.2mV (1/2LSB). Over the commercial
temperature range the worse-case error is 6mV (2.5LSB).
TYPICAL APPLICATIO
S
N
U
LT1220 TA03
1k
+
–
V
IN
OUT
V
1k
75
75
75
CABLE
LT1220
Cable Driver
DAC Current-to-Voltage Converter
–
+
LT1220
V
OUT
LT1220 TA05
22pF
1.1k
2.21k
1.1k
470pF
–
+
LT1220
47pF
909
909
2.67k
220pF
V
IN
1MHz, 4th Order Butterworth Filter
LT1220 TA04
+
–
V
OUT
5k
LT1220
5pF
565A TYPE
DAC
INPUTS
12
V
OS
+ I
OS
(5k
) +
< 1/2LSB
V
OUT
A
VOL
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
相關PDF資料 |
PDF描述 |
|---|---|
| LT1221CN8 | 150MHz Operational Amplifier |
| LT1221MJ8 | 150MHz Operational Amplifier |
| LT1221 | 150MHz Operational Amplifier |
| LT1221C | 150MHz Operational Amplifier |
| LT1221CS8 | 150MHz Operational Amplifier |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT1220MH | 制造商:LINER 制造商全稱:Linear Technology 功能描述:45MHz, 250V/ms Operational Amplifier |
| LT1220MJ8 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:45MHz, 250V/ms Operational Amplifier |
| LT1221 | 功能描述:PRINTER THERMAL 58MM 24V CLAM RoHS:否 類別:計算機，辦公室 - 元件，配件 >> 打印機 系列:LT1221 標準包裝:1 系列:Thermomark 類型:臺式熱敏打印機 技術規(guī)格:- 其它名稱:THERMOMARK S1.1THERMOMARKS1.1 |
| LT1221_01 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:150MHz, 250V/ms, A 4 Operational Amplifier |
| LT1221C | 功能描述:PRINTER THERMAL 58MM 24V CUTTER RoHS:否 類別:計算機，辦公室 - 元件，配件 >> 打印機 系列:LT1221 標準包裝:1 系列:Thermomark 類型:臺式熱敏打印機 技術規(guī)格:- 其它名稱:THERMOMARK S1.1THERMOMARKS1.1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。