參數(shù)資料
型號: STLC7549
廠商: 意法半導體
元件分類: Codec
英文描述: Stereo Audio/MODEM/Telephony Codec(立體聲音頻/調制解調器/電話編解碼器)
中文描述: 立體聲音頻/調制解調器/語音編解碼器(立體聲音頻/調制解調器/電話編解碼器)
文件頁數(shù): 20/35頁
文件大?。?/td> 335K
代理商: STLC7549
ELECTRICALSPECIFICATION
(continued)
MODEM ANDTELEPHONY
AV
DD
= 5V,DV
DD
= 3.3V; Input levels : Logic 0 = 0V, Logic1 = DV
DD
; 1kHz input sine wave;
Conversion rate = 9.6kHz. Measurement bandwidthis 100Hz to 4800Hz, 16-bit linear coding for modem
inputs and 16-bit linearcoding for telephonyinputs. For quadraphonicmode the measurement are done
with MCLKA = 11.2896MHz and MAMbit set to 1 in Register 20. Gain settings and attenuation (0dB) ;
0dBr= 2 x V
REFM
peak-to-peak; Load impedance10k
, 20pF ; unlessotherwise specified.
Analog Input Characteristics
Symbol
ADR
ADC Resolution
Parameter
Min.
16
16
-0.9
Typ.
Max.
Unit
Bits
Bits
LSB
dB
dB
dB
dB
dB
LSB
LSB
V
V
V
k
k
pF
dB
dB
dB
dB
dB
dB
Modem #1
Modem #2
DNL
SID
IcI
PIGS
ADC Differential Nonlinearity (see Note 1)
Signal to IntermodulationDistortion
Interchannel Isolation (f = 1kHz, V
input
= 200mV
PP
)
Programmable Input GainSpan
+0.9
85
85
Modem #1
Modem #2
6
12
GSEr
OFFr
Gain Step Size Error (see Note 3)
ADC Offset Error
0.5
100
100
2.6
Modem #1
Modem #2
10
10
2.5
V
REFM
FSI
Differential Reference Voltage Output = V
REFPM
- V
REFNM
Full Scale Input Voltage
2.4
Modem #1 (differential)
Modem #2 (single-ended)
2 x V
REFM
V
REFM
R
IN
Input Resistance
Modem #1
Modem #2
100
100
C
IN
SNDR
Input Capacitance
Signal / Noise + Distorsion at -6dBr ; 1kHz
15
84
79
70
90
85
76
Modem #1
Modem #2
Quadraphonic Mode
Modem #1
Modem #2
Quadraphonic Mode
DR
Dynamic Range (seeNote 2)
Notes :
1. This specificationis guaranteed by characterization, not productiontesting.
2. DR measured over the full bandwidth 0Hz to FSA/2 with-20dBr signal extrapoledto fullscale.
3. The gain step size error is the deviation of a gain or attenuationstep from a straight line passing through the no-gain/attenuation
value and the ideal full-gain/attenuationvalue.
7
STLC7549
20/35
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