参数资料
型号: MAX4232AUA+T
厂商: Maxim Integrated Products
文件页数: 15/15页
文件大小: 0K
描述: IC OP AMP R-R 10MHZ SD 8MSOP
其它有关文件: Automotive Product Guide
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: 2
输出类型: 满摆幅
转换速率: 10 V/µs
增益带宽积: 10MHz
电流 - 输入偏压: 50pA
电压 - 输入偏移: 850µV
电流 - 电源: 1.2mA
电流 - 输出 / 通道: 200mA
电压 - 电源,单路/双路(±): 2.7 V ~ 5.5 V,±1.35 V ~ 2.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
For example, the circuit in Figure 1 has a package power
dissipation of 196mW:
PEAK
DD
DC
RMS
PEAK
RMS
DC
RMS
V
RMS (V
V
)
2
1.0V
3.6V 1.8V
2.507V
2
I
1.8V 1.0V / 32
II
32
22
78.4mA
+
=
+
=
+
=
+
=
where:
VDC = the DC component of the output voltage.
IDC = the DC component of the output current.
VPEAK = the highest positive excursion of the AC compo-
nent of the output voltage.
IPEAK = the highest positive excursion of the AC compo-
nent of the output current.
Therefore:
IC(DISS)
RMS RMS
P
= V
I
COS
= 196mW
θ
Adding a coupling capacitor improves the package power
dissipation because there is no DC current to the load, as
shown in Figure 2:
PEAK
RMS
PEAK
RMS
DC
RMS
V
2
1.0V 0.707V
2
I
1.0V / 32
I
0A
22
22.1mA
=
+
=
+
=
Therefore:
IC(DISS)
RMS RMS
P
= V
I
COS
= 15.6mW
θ
If the configuration in Figure 1 were used with all four of
the MAX4234 amplifiers, the absolute maximum power
dissipation rating of this package would be exceeded (see
60mW Single-Supply Stereo
Headphone Driver
Two MAX4230/MAX4231s can be used as a single-supply,
stereo headphone driver. The circuit shown in Figure 2 can
deliver 60mW per channel with 1% distortion from a single
5V supply.
The input capacitor (CIN), in conjunction with RIN, forms a
highpass filter that removes the DC bias from the incom-
ing signal. The -3dB point of the highpass filter is given by
3dB
IN IN
1
f
2R C
=
π
Figure 1. MAX4230/MAX4231 Used in Single-Supply Operation
Circuit Example
Figure 2. Circuit Example: Adding a Coupling Capacitor Greatly
Reduces Power Dissipation of its Package
3.6V
VIN = 2VP-P
R
C
32
R
MAX4230
MAX4231
RIGHT
AUDIO INPUT
LEFT
AUDIO INPUT
CIN
CIN
RIN
RIN
RF
COUT
VBIAS
HEADPHONE JACK
TO 32 STEREO
HEADSET
RF
MAX4230
COUT
MAX4230–MAX4234
High-Output-Drive, 10MHz, 10V/μs,
Rail-to-Rail I/O Op Amps with Shutdown in SC70
www.maximintegrated.com
Maxim Integrated │ 9
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