VS2000 Datasheet, PDF (5/21 Pages) List of Unclassifed Manufacturers – Headtracking Multichannel USB Audio Headphone IC / USB DAC

VLSI
Solution ^y
VS2000
VS2000 PRELIMINARY
3. CHARACTERISTICS & SPECIFICATIONS
3.3 Analog Characteristics of Audio Outputs
Unless otherwise noted: AVDD=2.8V, CVDD=2.5V, IOVDD=3.3V, TA=-40..+85^◦C, XTALI=12 MHz,
Internal Clock Multiplier 4.0×. DAC tested with full-scale output sinewave, measurement bandwidth 20..20000 Hz,
analog output load: LEFT to CBUF 30Ω, RIGHT to CBUF 30Ω.
Parameter
Symbol Min Typ Max Unit
DAC Resolution
18
bits
Total Harmonic Distortion
THD
0.1 %
Dynamic Range (DAC unmuted, A-weighted)
IDR
94
dB
S/N Ratio (full scale signal, no load)
SNR
90
dB
Interchannel Isolation (Cross Talk)
Interchannel Isolation (Cross Talk), with GBUF
50 75
dB
40
dB
Interchannel Gain Mismatch
Frequency Response
-0.5
-0.05
0.5 dB
0.05 dB
Full Scale Output Voltage (Peak-to-peak)
Deviation from Linear Phase
Analog Output Load Resistance
Analog Output Load Capacitance
CBUF disconnect current (short-circuit protection)
AOLR
1.3 1.5 1.7 Vpp
5^◦
30¹
Ω
100² pF
200
mA
1 _{AOLR may be lower than Typical, but distortion performance may be compromised. Also, there is a maximum}
current that the internal regulators can provide.
2 _{CBUF must have external 10 Ω + 47 nF load, LEFT and RIGHT must have external 20 Ω + 10 nF load for stability.}
3.4 Analog Characteristics of Regulators
Parameter
Symbol Min Typ Max Unit
Continuous current, IOVDD
Continuous current, CVDD
Continuous current, AVDD
Dropout voltages, 30 mA
Line regulation, VHIGH_min . . . VHIGH_max
Load regulation, 1 mA . . . 30 mA
Absolute gain setting accuracy ¹
Gain step setting accuracy
50 mA
50 mA
100 mA
0.3
V
10
mV
100 mV
-150
+150 mV
-10
+10 %
1 _{Absolute level depends on RCAP voltage}
3.5 Power Consumption
Parameter
Min Typ Max Unit
Full operation in example application, V_bus = 5 V
75
mA
Version 0.3, 2007-09-05
5