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参数资料
| 型号： | MAX4169ESD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP R-R I/O W/SD 14-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 输出类型： | 满摆幅 |
| 转换速率： | 2 V/µs |
| 增益带宽积： | 5MHz |
| 电流 - 输入偏压： | 50nA |
| 电压 - 输入偏移： | 250µV |
| 电流 - 电源： | 1.3mA |
| 电流 - 输出 / 通道： | 125mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 6.5 V，±1.35 V ~ 3.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 带卷 (TR) |
MAX4165–MAX4169
High-Output-Drive, Precision, Low-Power, Single-
Supply, Rail-to-Rail I/O Op Amps with Shutdown
10
______________________________________________________________________________________
Single-Supply Speaker Driver
The MAX4165/MAX4166 can be used as a single-sup-
ply speaker driver, as shown in the
Typical Operating
Circuit. Capacitor C1 is used for blocking DC (a 0.1F
ceramic capacitor can be used). When choosing resis-
tors R3 and R4, take into consideration the input bias
current as well as how much supply current can be tol-
erated. Choose resistors R1 and R2 according to the
amount of gain and current desired. Capacitor C3
ensures unity gain for DC. A 10F electrolytic capacitor
is suitable for most applications. The coupling capaci-
tor C2 sets a low-frequency pole and is fairly large in
value. For a 32
load, a 100F coupling capacitor
gives a low-frequency pole at 50Hz. The low-frequency
pole can be set according to the following equation:
= 1 / 2π (RLC2)
Bridge Amplifier
The circuit shown in Figure 3 uses a dual MAX4167/
MAX4168 to implement a 3V, 200mW amplifier suitable
for use in size-constrained applications. This configura-
tion eliminates the need for the large coupling capaci-
tor required by the single op-amp speaker driver when
single-supply operation is a must. Voltage gain is set to
+10V/V; however, it can be changed by adjusting the
900k
resistor value. DC voltage at the speaker is limit-
ed to 10mV. The 47
and 0.1F capacitors across the
speaker maintain a low impedance at the load as fre-
quency increases.
Rail-to-Rail Input Stage
Devices in the MAX4165–MAX4169 family of high-out-
put-current amplifiers have rail-to-rail input and output
stages designed for low-voltage, single-supply opera-
tion. The input stage consists of separate NPN and
PNP differential stages that combine to provide an
input common-mode range that extends 0.25V beyond
the supply rails. The PNP stage is active for input volt-
ages close to the negative rail, and the NPN stage is
active for input voltages near the positive rail. The
switchover transition region, which occurs near VCC / 2,
has been extended to minimize the slight degradation
in common-mode rejection ratio caused by mismatch of
the input pairs.
VCC = +3V
900k
VCC = +3V
47
4.7k
0.1
F
1
F
0.1
F
INPUT
0.25Vp-p
32
100k
1/2 MAX4167
1/2 MAX4168
1/2 MAX4167
1/2 MAX4168
Figure 3. Dual MAX4167/MAX4168 Bridge Amplifier for
200mW at 3V
R3
R3 = R1
R2
R1
R2
MAX4165
MAX4166
MAX4167
MAX4168
MAX4169
Figure 4. Reducing Offset Error Due to Bias Current
(Noninverting)
R3
R3 = R1
R2
R1
R2
MAX4165
MAX4166
MAX4167
MAX4168
MAX4169
Figure 5. Reducing Offset Error Due to Bias Current (Inverting)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX417 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1.2レA Max, Single/Dual/Quad, Single-Supply Op Amps |
| MAX4172 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost, Precision, High-Side Current-Sense Amplifier |
| MAX4172_12 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Low-Cost, Precision, High-Side Current-Sense Amplifier |
| MAX4172ESA | 功能描述:电流灵敏放大器 Precision High-Side Current-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
| MAX4172ESA+ | 功能描述:电流灵敏放大器 Precision High-Side Current-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比（最小值）:110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel |
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