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參數(shù)資料
| 型號(hào)： | TDA7420 |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | MULTIFUNCTIONAUDIO PROCESSOR |
| 中文描述： | MULTIFUNCTIONAUDIO處理器 |
| 文件頁(yè)數(shù)： | 9/29頁(yè) |
| 文件大?。?/td> | 230K |
| 代理商： | TDA7420 |
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ELECTRICALCHARACTERISTICS
(continued)
Symbol
V
TRMIN
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Trigger Threshold (*)
1)
minimum
Measured with
NBT = 000
V
PEAK
= 1.2V
Measured with
NBT = 111
V
PEAK
= 1.2V
D2onbyte2= 1
D2onbyte2= 0
100
150
30
200
mVp
V
TRMIN
Trigger Threshold
1)
maximum
D2onbyte2= 1
D2onbyte2= 0
130
185
65
5
140
180
240
280
0.9
1.5
250
mVp
V
TRSTEP
V
TRNOISE
Trigger Threshold Step Size
Noise Adjusted Trigger Threshold
2)
mVp
mVp
mVp
mVp
mVp
V
V
Measured with
V
PEAK
= 1.4V
D2 on byte 2 = 0
NAT = 00
NAT = 01
NAT = 10
NAT = 11
V
PEAK
Rectifier Voltage
D2onbyte2=1
V
MPX
= 0mV
V
MPX
= 50mV
f = 200KHz
V
MPX
= 100mV
f = 200KHz
Measured with
V
MPX
= 500mV
(75KHz dev.)
2.0
V
V
RECTDEV
Deviation Dependent Rectifier
Voltage
3)
OVD = 00(off)
OVD = 01
OVD = 10
OVD = 11
FSC = 00(off)
FSC = 01
FSC = 10
FSC = 11
0.9
1.2
2.0
2.8
0.9
1.3
1.9
2.4
40
10
V
V
V
V
V
V
V
V
μ
s
pA
V
RECTFS
Field Strength Controlled Rectifier
Voltage
Measured with
V
MPX
= 0mV
V
SB
-V
R
= -500mV
(fullymono.)
CBLANK = 330pF
T
S
I
OS
Suppression Pulse Duration
Input Offset Current During
Suppression Time
(*) All thresholds are measured by using a pulse with T
= 2
μ
s, T
HIGH
= 2
μ
s and T
F
= 10
μ
s.
The repetition rate must not increase the PEAK voltage.
1) NTB representsbits D0 - D2 of NB byte 1
2) NAT representsbits D3 - D4 of NB byte 1
3) OVD represents bits D5 - D6 of NB byte 1
4) FSC representsbits D0 - D1 of NB byte 2
NOISE BLANKER PART
FEATURES:
INTERNAL 2nd ORDER 140KHz HIGH-PASS
FILTER
NOISE RECTIFIER OUTPUT FOR SIGNAL
QUALITYDETECTION
PROGRAMMABLE TRIGGERTHRESHOLD
TRIGGER THRESHOLD DEPENDENT ON
HIGH
FREQUENCY
GRAMMABLEGAIN
NOISE
WITH
PRO-
ADDITIONAL CIRCUITS FOR DEVIATION
AND FIELD STRENGTH -DEPENDENT TRIG-
GER ADJUSTMENT
BLANKING TIME PROGRAMMABLE BY EX-
TERNALCAPACITOR
VERY LOW OFFSET CURRENT DURING
HOLD TIME DUE TO OPAMPS WITH MOS
INPUTS
VTH
VMPX
DC-LEVEL
TR
THIGH
TF
Time
D94AU185
TDA7420
9/29
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相關(guān)代理商/技術(shù)參數(shù) |
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| TDA7421 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:AM/FM TUNER FOR CAR RADIO AND Hi-Fi APPLICATIONS |
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| TDA7427A | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
| TDA7427AAD | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:AM-FM RADIO FREQUENCY SYNTHESIZER AND IF COUNTER |
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