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参数资料
| 型号： | TDA7421N |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP64 |
| 封装： | TQFP-64 |
| 文件页数： | 46/47页 |
| 文件大小： | 374K |
| 代理商： | TDA7421N |
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Pin description
TDA7421N
15
FM RF ADJ
Tuning varicap voltage for RF FM filter
16
PLL VCC
PLL positive supply
17
LP OUT
Op Amp output to PLL loop filters
18
LP IN1
FM loop filter connection to op-amp inverting input
19
LP IN2
AM loop filter connection to op-amp inverting input
20
LP IN3
FM-HS loop filter connection to op-amp inverting input
21
PLL VREF
Voltage reference to Op Amp noninverting input
22
PLL GND
PLL ground
23
SLEEP
I2C bus disconnect signal
24
SDA
I2C bus data
25
SCL
I2C bus clock
26
DIG VDD
Digital positive supply
27
DIG GND
Digital ground
28 (*)
IFC SSTOP
AM STEREO
OUT
IF-Counter stop signal or
AM IF2 amplifier output
29
CLN GND
“Clean” ground
30
IF2 GND
IF2 ground
31
AM AGC2 TC
AM 2nd AGC time constant
32
AM DET
AM detector capacitor
33
AM BPF
AM IF filter
34
AM REF
Reference voltage of AM IF amplifier
35
AM IF2 in
AM IF2 amplifier input
36
IF2 VCC
IF2 positive supply
37
FM QUAD -
FM quadrature detector tank (differential -)
38
FM QUAD +
FM quadrature detector tank (differential +)
39
AUDIO OUT
FM MPX/AM Audio output
40(1)
FM SD
AM SD
FM station detector output or
AM station detector output
41(1)
FM SMETER
AM SMETER
FM DET ADJ
FM S-meter output or
AM S-meter output or
FM detector adjustment output
42
FM MUTE DRIVE FM mute time constant
43
FM BW TC
FM detuning detector time constant
44
IF1 GND
IF1 ground
45
FM LIM IN -
FM limiter negative input (differential -)
Table 2.
Pin description (continued)
Pin #
Pin name
Function
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA7427 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427A | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD1 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AD1 | 功能描述:音频 DSP AM/FM Radio Freq Syn RoHS:否 制造商:Texas Instruments 工作电源电压: 电源电流: 工作温度范围: 安装风格: 封装 / 箱体: 封装:Tube |
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