Tripath Technology, Inc. – Preliminary Technical Information
Performance Characteristics
T
A
= 25
°C.
Unless otherwise noted, the power stage used for testing is the TPS4100, the supply voltage is
VPP=20V, R
L
= 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
PARAMETER
P
OUT
Output Power (Note 7)
(Continuous power / channel)
THD + N
IHF-IM
SNR
CS
A
VERROR
CONDITIONS
THD+N = 0.1%
THD+N = 1.0%
THD+N = 10%
saturated sq. wave
Total Harmonic Distortion Plus Noise P
OUT
= 20W/Channel
19kHz, 20kHz, 1:1 (IHF),
P
OUT
= 10W/Channel
A-Weighted
P
OUT
= 70W/Channel
0dBr = 1W
P
OUT
= 1W/Channel
Same chip, channel to channel
Chip to chip
A-Weighted
After automatic DC calibration
MIN
TYP MAX UNITS
30
W
40
W
51
W
74
W
0.02 0.1
%
0.02
101
0.1
%
dB
dB
0.5
TBD
180
TBD
dB
dB
µ
V
mV
IHF Intermodulation Distortion
Signal-to-Noise Ratio
Channel Separation
Gain Error
70
0.5
TBD
80
e
NOUT
V
OFFSET
Output Noise Voltage
Output Offset Voltage
150
TBD
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)
T
A
= 25
°C.
Unless otherwise noted, the power stage used for testing is the TPS4100, the supply voltage is
VPP=20V, R
L
= 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
PARAMETER
CONDITIONS
P
OUT
Output Power (Notes 7,8)
VDD = 14.4V, THD+N = 0.1%
(continuous RMS/Channel)
VDD = 14.4V, THD+N = 10%
THD + N
Total Harmonic Distortion Plus Noise P
OUT
= 1W/Channel
SNR
CS
e
NOUT
V
OFFSET
Signal-to-Noise Ratio
Channel Separation
Output Noise Voltage
Output Offset Voltage
A-Weighted,
P
OUT
= 15W/Channel
0dBr = 1W
A-Weighted
After automatic DC calibration
MIN
TYP MAX UNITS
10
W
16
W
0.02 0.1
%
94
80
145
175
TBD
dB
dB
µ
V
92
70
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. ]
