参数资料
| 型号： | OPA567AIRHGT |
| 厂商： | Texas Instruments |
| 文件页数： | 5/26页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP R-R 1.2MHZ 12VQFN |
| 标准包装： | 1 |
| 放大器类型： | 通用 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 1.2 V/µs |
| 增益带宽积： | 1.2MHz |
| 电流 - 输入偏压： | 1pA |
| 电压 - 输入偏移： | 500µV |
| 电流 - 电源： | 9mA |
| 电流 - 输出 / 通道： | 2.4A |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 5.5 V，±1.25 V ~ 2.75 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-VQFN 裸露焊盘 |
| 供应商设备封装： | 12-VQFN-EP（5x5） |
| 包装： | 标准包装 |
| 产品目录页面： | 854 (CN2011-ZH PDF) |
| 其它名称： | 296-18697-6 |
OPA567
SBOS287A
13
www.ti.com
APPLICATIONS INFORMATION
BASIC CONFIGURATION
Figure 1 shows the OPA567 connected as a basic non-
inverting amplifier. However, the OPA567 can be used in
virtually any op amp configuration. A current limit setting
resistor (RSET, in Figure 1) is essential to the OPA567
operation, and cannot be omitted.
Power-supply terminals should be bypassed with low series
impedance capacitors. Using larger tantalum and smaller
ceramic type capacitors in parallel is recommended. Power-
supply wiring should have low series impedance.
POWER SUPPLIES
The OPA567 operates with excellent performance from a
single (+2.7V to +5.5V) supply or from dual supplies. Power
supply voltages do not need to be equal as long as the total
voltage remains below 5.5V. Parameters that vary signifi-
cantly with operating voltage are shown in the
Typical
Characteristics section.
ADJUSTABLE CURRENT LIMIT AND CURRENT
LIMIT FLAG PIN
The OPA567 provides over-current protection to the load
through its accurate, user-adjustable current limit (pin 6). The
current limit value, ILIMIT, can be set from 0.2A to 2.2A by
controlling the current to the ISET pin. The current limit, ILIMIT,
will be 9800 ISET, where ISET is the current through the ISET
pin. Setting the current limit requires no special power
resistors. The output current does not flow through this pin.
Setting the current limit
As illustrated in Figure 2, the simplest method of setting the
current limit is to connect a resistor or potentiometer between
FIGURE 1. Basic Connections.
FIGURE 2. Setting the Current Limit—Resistor Method.
the ISET pin and V–, the negative supply, according to the
formula:
ILIMIT = 9800 (1.18V/RSET)
Alternatively, the output current limit can be set by applying
a voltage source in series with a resistance using the equa-
tion:
ILIMIT = 9800 [(1.18V – VADJUST)/RSET]
The voltage source must be referenced to V–.
V
IN
R
1
R
2
47
F
Enable(2)
47
F
0.1
F
I
SET
47
F
1, 12
2, 3
8
9
11
6
4, 5
0.1
F
R
SET ()ILIMIT (A)
23.2k
11.5k
7.68k
5.76k
0.5
1.0
1.5
2.0
R
SET
(1)
V+
NOTES: (1) R
SET sets the current
limit value from 0.2A to 2.2A.
R
SET can be a potentiometer to
easily adjust current limit and
calibrate out errors at the current
limit node. (2) Enable—pull Low
to disable output.
V
O
V–
OPA567
R
SET
V
ADJUST
(1)
(b) Resistor/Voltage Source Method
NOTE: (1) This voltage source must be able to
sink the current from the I
SET pin, which is ILIMIT/9800.
1.18V
V–
I
LIMIT = 9800 (1.18V – VADJUST)
R
SET
I
SET
I
SET
8
9
6
2, 3
4, 5
8
9
6
4, 5
R
POT
(a) Resistor or Potentiometer Method
Putting a set resistor in series with the potentiometer
will prevent potential short-circuit on pin.
1.18V
V–
I
LIMIT = 9800 (1.18V/RSET)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OPA567AIRHGT | 制造商:Texas Instruments 功能描述:IC OP-AMP GP R-R 1.2MHZ 12VQFN |
| OPA567AIRHGTG4 | 功能描述:运算放大器 - 运放 Rail-to-Rail I/O 2A Power Amplifier RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| OPA569 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Power Op Amp. Output Signal Swings Within 200mV of Rails at 2A Output Current |
| OPA569AIDWP | 功能描述:运算放大器 - 运放 2A Pwr Op Amp Rail-To-Rail I/O RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| OPA569AIDWPG4 | 功能描述:运算放大器 - 运放 2A Pwr Op Amp Rail-To-Rail I/O RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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