参数资料
| 型号： | LT1782HS6#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP R-R IN/OUT SOT23-6 |
| 标准包装： | 500 |
| 系列： | Over-The-Top® |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.075 V/µs |
| 增益带宽积： | 225kHz |
| 电流 - 输入偏压： | 8nA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 45µA |
| 电流 - 输出 / 通道： | 30mA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 18 V，±1.25 V ~ 9 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | TSOT-23-6 |
| 包装： | 带卷 (TR) |
| 其它名称： | LT1782HS6#PBF LT1782HS6#PBF-ND |
LT1782
12
1782fc
APPLICATIONS INFORMATION
sourcing current is reduced to 10mA at 3V total supplies
as noted in the Electrical Characteristics section.
The LT1782 is internally compensated to drive at least
600pF of capacitance under any output loading condi-
tions. A 0.22F capacitor in series with a 150 resistor
between the output and ground will compensate these
amplifiers for larger capacitive loads, up to 10,000pF, at
all output currents.
Distortion
There are two main contributors to distortion in op amps:
output crossover distortion as the output transitions from
sourcing to sinking current, and distortion caused by non-
linear common mode rejection. If the op amp is operating
inverting, there is no common mode induced distortion.
If the op amp is operating in the PNP input stage (input is
not within 0.8V of V+), the CMRR is very good, typically
100dB. When the LT1782 switches between input stages,
there is significant nonlinearity in the CMRR. Lower load
resistance increases the output crossover distortion but
has no effect on the input stage transition distortion. For
lowest distortion, the LT1782 should be operated single
supply, with the output always sourcing current and with
the input voltage swing between ground and (V+ – 0.8V).
See the Typical Performance Characteristics curves,
“Total Harmonic Distortion + Noise vs Ouput Voltage
Amplitude.”
Gain
The open-loop gain is almost independent of load when
theoutputissourcingcurrent.Thisoptimizesperformance
in single supply applications where the load is returned to
ground. The typical performance curve of open-loop gain
for various loads shows the details.
Shutdown
The 6-lead part includes a shutdown feature that disables
thepart,reducingquiescentcurrentandmakingtheoutput
high impedance. The part can be shut down by bringing
the SHDN pin 1.2V or more above V–. When shut down,
the supply current is about 5A and the output leakage
current is less than 1A (V– ≤ VOUT ≤ V+). In normal opera-
tion, the SHDN pin can be tied to V– or left floating. See
the Typical Performance Characteristics curves, “Supply
Current vs Shutdown Pin Voltage.”
SIMPLIFIED SCHEMATIC
Q10
D5
Q9
Q1
Q7
R2
6k
R3
6k
R4
40k
Q8
Q5
–IN
+IN
Q11
Q12
D4
Q2
D1
Q6
Q13
Q14
R1
30k
R5
40k
Q4
Q15
Q19
D3
Q3
Q16
Q18
Q22
V+
Q17
Q20
Q21
OUT
SHDN
V–
1782 SS
2A
+
Q23
Q24
Q25
Q26
J1
相关PDF资料 |
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| LT1789IS8-1 | IC INSTRUMENT AMP R-R OUT 8-SOIC |
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