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| 型号： | DS4420N+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/10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) |
DS4420
I2C Programmable-Gain Amplifier
for Audio Applications
6
_____________________________________________________________________
Detailed Description
The key features of the DS4420 are illustrated in the
Block Diagram.
Controlling the DS4420
The DS4420 is controlled through the I2C serial inter-
face. Gain, mute, and standby settings all reside in one
control register located at memory address F8h (see
Figure 1). Writes to other memory addresses are invalid.
Programmable Gain
The gain is adjustable from -35dB to +25dB in 3dB
increments. The gain is determined by the five LSBs of
the control register as shown in Figure 1. Gain settings
greater than 14h are invalid.
Mute Mode
The DS4420 is placed in mute mode by setting the mute
bit located in the control register (see Figure 1). When in
this mode, the output of the amplifier is muted and is
independent of the gain setting. The input-to-output
attenuation is specified in the
Electrical Characteristics
table as AMUTE.
Standby Mode
Standby mode is entered by setting the standby control
bit (see Figure 1). Setting the standby control bit mutes
the output of the amplifier and places the DS4420 into a
low-current (ISTBY) consumption state. Unlike mute
mode, however, standby mode is intended for use when
no input signal is present. While in standby mode, the
DS4420 maintains input and output common-mode bias
voltages. The device produces no audible clicks or
pops when entering or exiting the standby state. The
time required for the output to become active when
exiting standby mode is specified as tPU.
Pin Description
PIN
NAME
FUNCTION
1A2
2A1
3A0
Address Select Inputs—Determine I2C Slave Address. Device address is 1010A2A1A0.
4
SCL
I2C Serial Clock—Input for I2C Clock
5
SDA
I2C Serial Data—Input/Output for I2C Data
6VCC
Digital Power-Supply Terminal
7
GND
Ground
8
IN+
9
IN-
Differential Audio Input Signal
10
N.C.
No Connection
11
AGND
Analog Ground (Must be Connected to GND)
12
OUT-
13
OUT+
Differential Audio Output Signal
14
AVCC
Analog Power Supply (Must be Connected to VCC)
EP
Exposed Paddle. Connect to GND and AGND.
Block Diagram
DS4420
3dB
GAIN
STEPS
AVCC
AGND
GND
VCC
A2
A1
A0
SDA
SCL
IN+
IN-
OUT+
OUT-
I2C INTERFACE
-35dB
TO +25dB
GAIN
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS4421FP000 | 制造商:Thomas & Betts 功能描述:400A,CON,3P4W,MG,421,3P440V |
| DS4421MP000 | 制造商:Thomas & Betts 功能描述:400A,PLG,3P4W,MG,421,3P440V |
| DS4421MR000 | 制造商:Thomas & Betts 功能描述:400A,NLT,3P4W,MG,421,3P440V |
| DS4422 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC |
| DS4422_09 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Two-/Four-Channel, I2C, 7-Bit Sink/Source Current DAC |
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