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參數(shù)資料
| 型號： | HM9270C |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | DTMF Receiver(集成了濾波器和數(shù)字譯碼器功能的雙音多頻（DTMF）接收器) |
| 中文描述： | 雙音多頻接收器（集成了濾波器和數(shù)字譯碼器功能的雙音多頻（DTMF）的接收器） |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 57K |
| 代理商： | HM9270C |
DTMF RECEIVER
HM 9270C/D
— 2 —
Block Diagram (Figure 1)
Pin Sym.
1
2
IN+
IN-
3
GS
4
V
REF
5
INH
6
PWDN
7
8
OSC1
OSC2
9
V
SS
10
TOE
Non-Inverting input
Invering Input
Gain select. Gives access to output of front-end differential amplifier for connection of
feedback resistor.
Reference voltage output,nominally V
DD
/2. May be used to bias the inputs at midrail
(see application diagram).
Inhibit (input) logic high inhibit the detection of 1633Hz internal built-in pull down
resistor. (HM9270D only).
Power down (input). Active high power down the device and inhibit the oscillator
internal built-in pull down resistor. (HM9270D only).
Clock Input
Clock Output
Negative power supply, normally connected to 0V.
3-state data output enable (input). Logic high enables the outputs Q1-Q4. Internal
pull-up.
Connections to the front-end differential amplifier.
Function
Pin Description
3.579545 MHz crystal connected between these pins completes
internal oscillator.
Q1
Q2
Q3
Q4
OSC1
OSC2
GS
IN
IN+
+
-
CHIP
CLOCKS
CHIP
POWER
CHIP
BIAS
CHIP
REF
DIAL
TONE
FILTER
HIGH
GROUP
FILTER
LOW
GROUP
FILTER
BIAS
CIRCUIT
+
-
ZERO
CROSSING
DETECTORS
DIGITAL
DETECTION
ALGORITHM
CODE
CONVERTER
AND
LATCH
STEERING
LOGIC
TOE
StD
V
DD
V
SS
V
REF
St/
GT
ESt
INH
PWDN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HM9270D | DTMF RECEIVER |
| HMA2701R1 | FULL PITCH MINI-FLAT PACKAGE 4-PIN OPTOCOUPLERS |
| HMA121AR2V | FULL PITCH MINI-FLAT PACKAGE 4-PIN OPTOCOUPLERS |
| HMAA2705R4V | FULL PITCH MINI-FLAT PACKAGE 4-PIN OPTOCOUPLERS |
| HMAA2705V | FULL PITCH MINI-FLAT PACKAGE 4-PIN OPTOCOUPLERS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HM9270D | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:DTMF RECEIVER |
| HM92M | 制造商:HSMC 制造商全稱:HSMC 功能描述:PNP EPITAXIAL PLANAR TRANSISTOR |
| HM94 | 制造商:HSMC 制造商全稱:HSMC 功能描述:PNP EPITAXIAL PLANAR TRANSISTOR |
| HM965 | 制造商:HSMC 制造商全稱:HSMC 功能描述:NPN EPITAXIAL PLANAR TRANSISTOR |
| HM9-6516BB6129 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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