参数资料
| 型号： | AD628ARZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/21页 |
| 文件大小： | 0K |
| 描述： | IC AMP PGA DIFF PREC 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| 转换速率： | 0.3 V/µs |
| -3db带宽： | 600kHz |
| 电流 - 输入偏压： | 1.5nA |
| 电压 - 输入偏移： | 150µV |
| 电流 - 电源： | 1.6mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 36 V，±2.25 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
AD628
Rev. G | Page 18 of 20
CURRENT LOOP RECEIVER
Analog data transmitted on a 4 to 20 mA current loop can be
detected with the receiver shown in Figure 33. The AD628 is an
ideal choice for such a function because the current loop is
driven with a compliance voltage sufficient to stabilize the loop,
and the resultant common-mode voltage often exceeds commonly
used supply voltages. Note that with large shunt values, a resistance
of equal value must be inserted in series with the inverting
input to compensate for an error at the noninverting input.
MONITORING BATTERY VOLTAGES
Figure 34 illustrates how the AD628 is used to monitor a battery
charger. Voltages approximately eight times the power supply
voltage can be applied to the input with no damage. The resistor
divider action is well suited for the measurement of many
power supply applications, such as those found in battery
chargers or similar equipment.
For proper operation, the common-mode voltage must satisfy
the input specifications in Table 1, as well as Equation 2.
6
8
1
4
5
7
2
3
AD628
+15V
+2.5V
9.53k
–15V
10k
0V TO 5V
TO ADC
I = 4 TO 20mA
100k
210k
100k
249
VCM = 15V
10k
249
02
99
2-
0
31
Figure 33. Level Shifter for 4 to 20 mA Current Loop
+IN
–IN
G= +0.1
10k
A1
–IN
100k
VREF
–5V
–IN
A2
OUT
AD628
100k
10k
CHARGING
CIRCUIT
+1.5V
BATTERY
10k
+IN
nVBAT(V)
REXT1
10k
TO ADC
CFILT
RG
02
99
2-
0
32
OTHER
BATTERIES IN
CHARGING
CIRCUIT
+5V
+IN
Figure 34. Battery Voltage Monitor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD628-EVAL | 制造商:Analog Devices 功能描述:Evaluation Board For High Voltage Current Shunt Sensing |
| AD629 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Channel Audio Difference Amplifier |
| AD629_07 | 制造商:AD 制造商全称:Analog Devices 功能描述:High Common-Mode Voltage, Difference Amplifier |
| AD629A | 制造商:AD 制造商全称:Analog Devices 功能描述:High Common-Mode Voltage Difference Amplifier |
| AD629AN | 功能描述:IC AMP DIFF 25MA LDRIFT 8DIP RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SO 包装:带卷 (TR) |
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