參數(shù)資料
型號(hào): TDA7528
廠商: STMICROELECTRONICS
元件分類(lèi): 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件頁(yè)數(shù): 29/65頁(yè)
文件大?。?/td> 610K
代理商: TDA7528
TDA7528
Electrical characteristics
Doc ID 13141 Rev 6
3.10
A/D-converter
The TDA7528 contains a 6bit SAR A/D-Converter for sensing several analog values of the
tuner. The following analog sources can be switched to the ADC input by software
command:
Temperature sensor
TCFM
TCAM
TCIF1/2 (depends on which one is active)
VCO tuning voltage (=3/5 * Vtune)
GP1
GP2
Internal VCC divider (2/5 * VCC)
The ADC is clocked by an integrated RC-oscillator, or the PLL reference frequency.
Table 23.
A/D-converter
Symbol
Parameter
Test condition, comments
Min.
Typ
Max
Units
-
INL
Referred to internal VDD
-2
-
2
LSB
-
DNL
-
-0.5
-
0.5
LSB
-
Input voltage range
-
0
-
VDD
V
fOsc
Oscillation frequency
2bit programmable
RCfreq<1:0> = 00
RCfreq<1:0> = 01
RCfreq<1:0> = 10
RCfreq<1:0> = 11
1.72
0.68
1.31
1.9
2.5
-
MHz
-
frequency error
-
±40
%
tADC
Conversion time(1)
12 clock cycles
-
7
s
1.
With RC-oscillator frequency = 2.5MHz
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