ZHCSRP5 May 2024 INA791B
ADVANCE INFORMATION
参数 | 测试条件 | 最小值 | 典型值 | 最大值 | 单位 | |
---|---|---|---|---|---|---|
输入 | ||||||
VCM | 共模输入范围 | VIN+ = –4V 至 110V,ISENSE = 0A, TA = –40°C 至 +125°C |
-4 | 110 | V | |
CMRR | 共模抑制比 | VIN+ = –4V 至 110V,ISENSE = 0A, TA = –40°C 至 +125°C,INA791A |
±25 | ±79 | µA/V | |
VIN+ = –4V 至 110V,ISENSE = 0A, TA = –40°C 至 +125°C,INA791B |
±790 | ±2500 | ||||
CMRR | 共模抑制比 | f = 50kHz | ±56 | mA/V | ||
Ios | 失调电流,以输入为基准 | ISENSE = 0A,INA791A | ±5 | ±30 | mA | |
ISENSE = 0A,INA791B | ±62.5 | ±375 | ||||
dIos/dT | 失调电流漂移 | ISENSE = 0A, TA = –40°C 至 +125°C,INA791A |
0.125 | ±0.625 | mA/°C | |
ISENSE = 0A, TA = –40°C 至 +125°C,INA791B |
0.250 | ±1.25 | ||||
PSRR | 电源抑制比 | VS = 2.7V 至 5.5V,VREF = 1V,ISENSE = 0A,INA791A | 0.25 | ±2.5 | mA/V | |
VS = 2.7V 至 5.5V,VREF = 1V,ISENSE = 0A,INA791B | 2.5 | ±25 | ||||
IB | 总输入偏置电流 | IB++ IB-,ISENSE = 0A | ±50 | ±80 | ±100 | µA |
IFB | 反馈电流 | ISENSE = 0A | ±1.3 | nA | ||
ISENSE = 0A,TA = –40°C 至 +125°C | ±5 | |||||
集成型分流电阻器 | ||||||
RSHUNT | 内部开尔文分流电阻 | IN+ 至 IN–,TA = 25°C | 350 | 400 | 500 | µΩ |
引脚对引脚封装电阻 | IS+ 至 IS–,TA = 25°C | 450 | 560 | 650 | µΩ | |
引脚对引脚封装电感 | IS+ 至 IS–,TA = 25°C | 2 | nH | |||
ISENSE | 最大持续电流 | TA = -40°C 至 +125°C | ±50 | A | ||
短路时间过载变化 | ISENSE = 120A 并持续 5 秒 | ±0.05 | % | |||
因温度循环而变化 | -65°C 至 150°C,500 个周期 | ±0.1 | % | |||
焊接热导致的分流电阻变化 | 260°C 焊接,10s | ±0.1 | % | |||
高温暴露变化 | 1000 小时,TA = 150°C | ±0.15 | % | |||
输出 | ||||||
G | 增益 | INA791A、INA791B、 | 20 | mV/A | ||
G | 系统增益误差(分流器 + 放大器)(1) | GND + 50mV ≤ VOUT ≤ VS – 200mV, TA = 25°C,INA791A |
±0.05 | ±0.35 | % | |
GND + 50mV ≤ VOUT ≤ VS – 200mV, TA = 25°C,INA791B |
±0.1 | ±1 | ||||
G | 系统增益误差(分流器 + 放大器) | TA = –40°C 至 +125°C,INA791A | ±0.5 | ±35 | ppm/°C | |
TA = –40°C 至 +125°C,INA791B | ±10 | ±75 | ||||
非线性误差 | GND + 10mV ≤ VOUT ≤ VS – 200mV | ±0.01 | % | |||
RVRR | 基准电压抑制比(以输入为基准) | ±2.5 | ±12.5 | mA/V | ||
最大容性负载 | 无持续振荡 | 0.5 | nF | |||
电压输出 | ||||||
相对于 VS 电源轨的摆幅 | RL = 10kΩ 至 GND,VREF = VS,可调增益 = 4,TA = –40°C 至 +125°C | VS - 0.05 | VS - 0.2 | V | ||
对地摆幅 | RL = 10kΩ 至 GND,可调节增益 = 4,VREF = GND,TA = –40°C 至 +125°C | VGND + 5 | VGND + 20 | mV | ||
对地摆幅 | RL = 10kΩ 至 GND,VREF = GND,TA = –40°C 至 +125°C | VGND + 1 | VGND + 5 | mV | ||
频率响应 | ||||||
BW | 带宽(电流检测放大器) | –3dB 带宽,VFB = VOUT | 1 | MHz | ||
–3dB 带宽,可调增益 = 4 | 0.5 | MHz | ||||
稳定时间(电流检测放大器输入至输出) | VIN+,VIN– = 48V,VOUT = 1.5V 至 3.5V, 输出稳定到 1% |
1.5 | µs | |||
VIN+,VIN– = 48V,可调增益 = 4,VOUT = 0.5V 至 4.5V,输出稳定到 1% | 2.5 | µs | ||||
VIN+,VIN– = 48V,VOUT = 1.5V 至 3.5V, 输出稳定到 5% |
1 | µs | ||||
VIN+,VIN– = 48V,可调增益 = 4,VOUT = 0.5V 至 4.5V,输出稳定到 5% | 2 | µs | ||||
SR | 压摆率 | VFB = VOUT | 1.8 | V/µs | ||
可调增益 = 4 | 1.5 | V/µs | ||||
噪声 | ||||||
电流噪声密度 | 150 | µA/√Hz | ||||
电源 | ||||||
IQ | 静态电流 | 3.5 | 3.75 | mA | ||
TA = -40°C 至 +125°C | 4 | mA | ||||
温度 | ||||||
警报 | 热警报阈值 | Rpullup = 10kΩ, | 160 | °C | ||
AlertLO | 热警报阈值对地摆幅 | Rpullup = 10kΩ, | 200 | mV |