- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10336 > DS4420N+ (Maxim Integrated Products)IC AMP AUDIO MONO AB DIFF 14TDFN PDF資料下載
參數(shù)資料
| 型號(hào)： | DS4420N+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 10/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO MONO AB DIFF 14TDFN |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道） |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 特點(diǎn)： | 差分輸入，I²C，靜音，待機(jī) |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 14-TDFN-EP（3x3） |
| 封裝/外殼： | 14-WFDFN 裸露焊盤 |
| 包裝： | 管件 |
DS4420
I2C Programmable-Gain Amplifier
for Audio Applications
_____________________________________________________________________
9
Byte Read: A byte read is an 8-bit information transfer
from the slave to the master plus a 1-bit ACK or NACK
from the master to the slave. The 8 bits of information
that are transferred (most significant bit first) from the
slave to the master are read by the master using the bit
read definition above, and the master transmits an ACK
using the bit write definition to receive additional data
bytes. The master must NACK the last byte read to ter-
minate communication so the slave will return control of
SDA to the master.
Slave Address Byte: Each slave on the I2C bus
responds to a slave address byte sent immediately fol-
lowing a start condition. The slave address byte con-
tains the slave address in the most significant 7 bits
and the R/W bit in the least significant bit.
The DS4420’s slave address is determined by the state
of the A0, A1, and A2 address pins as shown in Figure
2. Address pins connected to GND result in a ‘0’ in the
corresponding bit position in the slave address.
Conversely, address pins connected to VCC result in a
‘1’ in the corresponding bit positions.
When the R/W bit is 0 (such as in A0h), the master is indi-
cating it will write data to the slave. If R/W is set to a 1,
(A1h in this case), the master is indicating it wants to read
from the slave.
If an incorrect (nonmatching) slave address is written,
the DS4420 will assume the master is communicating
with another I2C device and ignore the communication
until the next start condition is sent.
Memory Address: During an I2C write operation to the
DS4420, the master must transmit a memory address to
identify the memory location where the slave is to store
the data. The memory address is always the second
byte transmitted during a write operation following the
slave address byte.
I2C Communication
Writing a Single Byte to a Slave: The master must gen-
erate a start condition, write the slave address byte (R/W
= 0), write the memory address, write the byte of data,
and generate a stop condition. The master must read the
slave’s acknowledgement during all byte write operations.
Reading a Single Byte from a Slave: Unlike the write
operation that uses the specified memory address byte
to define where the data is to be written, the read oper-
ation occurs at the present value of the memory
address counter. A dummy write cycle can be used to
force the address pointer to a desired location. To do
this, the master generates a start condition, writes the
slave address byte (R/W =0), writes the memory
address where it desires to read, generates a repeated
start condition, writes the slave address byte (R/W = 1),
reads the data byte with a NACK to indicate the end of
the transfer, and generates a stop condition.
See Figure 4 for I2C communication examples.
Applications Information
Power-Supply Decoupling
The DS4420 has separate supply voltages for its ana-
log and digital circuitry. For best noise and distortion
performance, place a 0.1F or 0.01F capacitor from
VCC to GND and from AVCC to AGND. These capaci-
tors should be placed as close as possible to the sup-
ply and ground pins of the device.
XXXXXXXX
10
1
0
A0 0
A1
A2
11
1
0
1
10
1
0
A0 0
A1
A2
11
1
0
1
10
1
0
A0 1
A1
A2
COMMUNICATIONS KEY
WRITE THE GAIN SETTING
F8h
READ THE GAIN SETTING
F8h
8-BITS ADDRESS OR DATA
NOTE 2: THE FIRST BYTE SENT AFTER A START CONDITION IS
ALWAYS THE SLAVE ADDRESS FOLLOWED BY THE
READ/WRITE BIT.
START
ACK
NOT
ACK
S
A
AA
P
ASr
AN
P
REGISTER SETTING
A
PN
Sr
STOP
REPEATED
START
NOTE 1: ALL BYTES ARE SENT MOST SIGNIFICANT BIT FIRST.
SHADED BOXES INDICATE THE SLAVE IS
CONTROLLING SDA
WHITE BOXES INDICATE THE MASTER IS
CONTROLLING SDA
Figure 4. I2C Communication Examples
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27467T15F5PA | CONN PLUG 5POS STRAIGHT W/PINS |
| D38999/20JJ61PALC | CONN HSG RCPT 61POS WALL MT PINS |
| D38999/26FC98SBLC | CONN HSG PLUG 10POS STRGHT SCKT |
| AD7927BRUZ-REEL | IC ADC 12BIT 8CH W/SEQ 20TSSOP |
| D38999/26WG39BN | CONN HSG PLUG 39POS STRGHT SCKT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS4420N+ | 功能描述:音頻放大器 I2C Programmable Gain Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| DS4420N+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:I2C PROGRAMMABLE AUDIO AMP T&R LF - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC OPAMP AUDIO 14TDFN 制造商:Maxim Integrated Products 功能描述:Audio Amplifiers I2C Programmable Gain Amplifier |
| DS4420N+T&R | 功能描述:音頻放大器 I2C Programmable Gain Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| 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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。