OPA838 1mA 300MHz 增益带宽电压反馈运算放大器

描述

OPA838解补电压反馈运算放大器只需0.95mA的修整电源电流，即可以1.8nV /√ Hz 的输入噪声电压提供高达300MHz的增益带宽积。这些特性相结合，可为光电二极管跨阻设计和高电压增益级（它们在信号接收器应用中需要最低的输入电压噪声提供极其省电的解决方案。

以6V /V的最小建议同相增益运行时会产生90MHz，-3dB带宽。极低的输入噪声和偏移电压使得OPA838特别适合高增益。即使在1000V /V的直流耦合增益下，也可获得300kHz的信号带宽，且最大输出偏移电压为±125mV。

单通道OPA838采用6引脚SOT-23和SC70封装（包含电源关断特性）以及5引脚SC70封装。

所有商标均为其各自所有者的财产。


Architecture
Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
BW @ Acl (MHz)
Acl, min spec gain (V/V)
Slew Rate (Typ) (V/us)
Vn at Flatband (Typ) (nV/rtHz)
Vn at 1kHz (Typ) (nV/rtHz)
Iq per channel (Typ) (mA)
Vos (Offset Voltage @ 25C) (Max) (mV)
Rail-to-Rail
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
CMRR (Typ) (dB)
Input Bias Current (Max) (pA)
Offset Drift (Typ) (uV/C)
GBW (Typ) (MHz)
Output Current (Typ) (mA)
2nd Harmonic (dBc)
3rd Harmonic (dBc)
@ MHz

OPA838	OPA2836	OPA835	OPA836	OPA837
Bipolar Voltage FB	Bipolar Voltage FB	Bipolar Voltage FB	Bipolar Voltage FB	Voltage FB
1	2	1	1	1
2.7	2.5	2.5	2.5	2.7
5.4	5.5	5.5	5.5	5.4
90	205	56	205	105
6	1	1	1	1
350	560	160	560	105
1.8	4.6	9.3	4.6	4.7
1.8	4.6	9.3	4.6	4.7
0.96	1	0.25	1	0.592
0.125	0.4	0.5	0.4	0.13
In to V- Out	In to V- Out	In to V- Out	In to V- Out	In to V- Out
Small Size Shutdown	Small Size Shutdown	Small Size Shutdown	Small Size Shutdown	Small Size Shutdown
Catalog	Catalog	Catalog	Catalog	Catalog
-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
SC70 SC70 SOT-23	QFN SOIC UQFN VSSOP	QFN SOT-23	QFN SOT-23	SC70 SOT-23
5SC70: 4 mm2: 2.1 x 2(SC70) 6SC70: 4 mm2: 2.1 x 2(SC70) 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)	10QFN: 4 mm2: 2 x 2(QFN) 8SOIC: 29 mm2: 6 x 4.9(SOIC) 10UQFN: 4 mm2: 2 x 2(UQFN) 10VSSOP: 15 mm2: 4.9 x 3(VSSOP)	10QFN: 4 mm2: 2 x 2(QFN) 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)	10QFN: 4 mm2: 2 x 2(QFN) 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)	5SC70: 4 mm2: 2.1 x 2(SC70) 6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)
105	116	113	116	110
4400000	1000000	400000	1000000	520000
0.4	1.1	2.25	1.1	0.4
300	120	30	120	50
20	50	40	50	50
-110	85	70	85	120
-120	79	73	79	145
1	1	1	1	0.1