Tripath Technology, Inc. – Preliminary Technical Information
Performance Characteristics
TA = 25 °C. Unless otherwise noted, the power stage used for testing is the TPS4100, the supply voltage is
VPP=20V, RL = 4Ω, PGC = 1, post-gain = +2.5dB, coarse gain = 4x, channel volume = 255, feedback
resistor values (1% tolerance) are RFB2 = 1.0K and RFB3 = 5.6K, the MCK frequency is 12.288 MHz, fs =
48kHz, the input frequency is 1kHz, and the measurement bandwidth is 20kHz. See Application/Test Circuit
on page 9.
SYMBOL
POUT
PARAMETER
Output Power (Note 7)
(Continuous power / channel)
CONDITIONS
THD+N = 0.1%
THD+N = 1.0%
THD+N = 10%
MIN TYP MAX UNITS
30
40
51
74
W
W
W
W
%
saturated sq. wave
THD + N
IHF-IM
Total Harmonic Distortion Plus Noise POUT = 20W/Channel
0.02 0.1
IHF Intermodulation Distortion
19kHz, 20kHz, 1:1 (IHF),
POUT = 10W/Channel
A-Weighted
POUT = 70W/Channel
0dBr = 1W
0.02 0.1
%
dB
dB
SNR
Signal-to-Noise Ratio
101
CS
Channel Separation
Gain Error
70
80
AVERROR
POUT = 1W/Channel
Same chip, channel to channel
Chip to chip
0.5
TBD
0.5
TBD
dB
dB
eNOUT
Output Noise Voltage
Output Offset Voltage
A-Weighted
150 180
µV
VOFFSET
After automatic DC calibration
TBD
TBD
mV
Note 7: Typical output power performance shown for reference only. Please refer to TPS4100 data sheet
for additional information.
AM Mode Performance Characteristics (Note 9)
TA = 25 °C. Unless otherwise noted, the power stage used for testing is the TPS4100, the supply voltage is
VPP=20V, RL = 4Ω, PGC = 1, post-gain = +2.5dB, coarse gain = 4x, channel volume = 255, feedback
resistor values are RFB2 = 1.0K and RFB3 = 5.6K, the MCK frequency is 12.288 MHz, fs = 48kHz, the input
frequency is 1kHz, and the measurement bandwidth is 20kHz. See Application/Test Circuit on page 9.
SYMBOL
POUT
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Output Power (Notes 7,8)
(continuous RMS/Channel)
Total Harmonic Distortion Plus Noise POUT = 1W/Channel
VDD = 14.4V, THD+N = 0.1%
VDD = 14.4V, THD+N = 10%
10
16
W
W
%
THD + N
SNR
0.02 0.1
Signal-to-Noise Ratio
A-Weighted,
OUT = 15W/Channel
0dBr = 1W
92
70
94
dB
P
CS
Channel Separation
Output Noise Voltage
Output Offset Voltage
80
dB
eNOUT
VOFFSET
A-Weighted
145 175
TBD
µV
After automatic DC calibration
TBD
mV
Note 8: Power stage heat sinking in AM Mode must be increased (as compared to Class T mode) to sustain
the typical output numbers. This is due to the lower efficiency of Class B output stage operation.
4
TCD6001 – JL/Rev. 0.9/07.05
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
