VLSI
Solution
y
VS1103b
VS1103B
3. CHARACTERISTICS & SPECIFICATIONS
3.3 Analog Characteristics
Unless otherwise noted: AVDD=2.5..2.85V, CVDD=2.4..2.7V, IOVDD=CVDD-0.6V..3.6V, TA=-25..+70◦C,
XTALI=12..13MHz, Internal Clock Multiplier 3.5×. DAC tested with 1307.894 Hz full-scale output
sinewave, measurement bandwidth 20..20000 Hz, analog output load: LEFT to GBUF 30Ω, RIGHT to
GBUF 30Ω. Microphone test amplitude 50 mVpp, fs=1 kHz, Line input test amplitude 1.1 V, fs=1 kHz.
Parameter
Symbol
Min
Typ
Max
Unit
DAC Resolution
18
bits
Total Harmonic Distortion
THD
0.1
0.3
%
Dynamic Range (DAC unmuted, A-weighted)
IDR
90
dB
S/N Ratio (full scale signal)
SNR
70
dB
Interchannel Isolation (Cross Talk)
50
75
dB
Interchannel Isolation (Cross Talk), with GBUF
40
dB
Interchannel Gain Mismatch
-0.5
0.5
dB
Frequency Response
-0.1
0.1
dB
Full Scale Output Voltage (Peak-to-peak)
1.3
1.51
1.7
Vpp
Deviation from Linear Phase
5
◦
Analog Output Load Resistance
AOLR
16
302
Ω
Analog Output Load Capacitance
100
pF
Microphone input amplifier gain
MICG
26
dB
Microphone input amplitude
50
1403
mVpp AC
Microphone Total Harmonic Distortion
MTHD
0.02
0.10
%
Microphone S/N Ratio
MSNR
50
62
dB
Line input amplitude
2200
28003
mVpp AC
Line input Total Harmonic Distortion
LTHD
0.06
0.10
%
Line input S/N Ratio
LSNR
60
68
dB
Line and Microphone input impedances
100
kΩ
1 3.0 volts can be achieved with +-to-+ wiring for mono difference sound.
2 AOLR may be much lower, but below Typical distortion performance may be compromised.
3 Harmonic Distortion increases above typical amplitude.
Version 1.01, 2007-09-03
10
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