参数资料
型号: DS4420N+T&R
厂商: Maxim Integrated Products
文件页数: 2/10页
文件大小: 0K
描述: IC AMP AUDIO MONO AB DIFF 14TDFN
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: 音频
电路数: 1
输出类型: 差分
电流 - 电源: 1.7mA
电流 - 输出 / 通道: 95mA
电压 - 电源,单路/双路(±): 4.5 V ~ 5.5 V
工作温度: -20°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 14-WFDFN 裸露焊盘
供应商设备封装: 14-TDFN-EP(3x3)
包装: 带卷 (TR)
Exposed Paddle
The DS4420 exposed paddle is not electrically isolated.
It must be soldered to ground for proper operation.
Input-Coupling Capacitors
The DS4420 is designed to be operated with an AC-
coupled input signal. The input resistance, RIN, is suffi-
ciently large to allow the use of small and inexpensive
external capacitors. The input resistance combined
with the AC-coupling capacitor will create a highpass
filter. The -3dB cutoff frequency of the highpass, fC, is
given by:
where CIN is the external coupling capacitor and RIN is
the internal input resistance.
At the cutoff frequency, the input signal will be attenuat-
ed 3dB, with less attenuation as the signal’s frequency
increases beyond the cutoff frequency. To guarantee
passband flatness, the cutoff frequency of the filter
should be designed using the specified minimum input
resistance, and placed well below the desired flat band
of the circuit. The typical input resistance should only
be used to estimate typical performance.
Internal Ground Connections
The DS4420’s ground pins, GND and AGND, must be
connected together externally. Internally, they are con-
nected as shown in Figure 5.
Chip Topology
TRANSISTOR COUNT: 5347
SUBSTRATE CONNECTED TO: Ground
Package Information
For the latest package outline information, go to www.maxim-
ic.com/DallasPackInfo.
f
CR
C
IN
1
2
=
××
π
GND
AGND
13Ω
TYPICAL
Figure 5. Internal Ground Connections
Springer
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2006 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
is a registered trademark of Dallas Semiconductor Corporation.
I2C Programmable-Gain Amplifier
for Audio Applications
DS4420
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