Texas Instruments PurePath Digital TAS5342DDV6EVM, Руководство пользователя

Страница: 9 / 47

www.ti.com
TAS5342DDV6EVM Performance
Table 4. TAS5342 Warning/Error Signal Decoding
OTW SD Device Condition
0 0 High-temperature error and/or high-current error
0 1 High-temperature warning
1 0 Undervoltage lockout or high-current error
1 1 Normal operation, no errors/warnings
The temperature warning signals at the TAS5342DDV6EVM board are wired-OR to one temperature
warning signal (OTW – pin 22 in the control interface connector). Shutdown signals are wired-OR into one
shutdown signal (SD – pin 20 in the control interface connector).
The shutdown signals together with the temperature warning signal give chip-state information as
described in the
Table 4 . device fault-reporting outputs are open-drain outputs.
4 TAS5342DDV6EVM Performance
Table 5. General Test Conditions
General Test Conditions Notes
Output stage supply voltage: 31.5 V Laboratory power supply (EA-PS 7065-10A)
Load impedance BTL: 4–8 Ω
Load impedance PBTL: 2–4 Ω
Input signal 1 kHz sine
Sampling frequency 48 kHz
Gain setting in TAS5508B 0 dB
Measurement filter AES17 and AUX0025
TI input board Input-USB2 Rev 1
EVM configuration file Ver 1.00 TAS5342DDV6EVM Configuration (1.00).cfg
Note: These test conditions are used for all tests, unless otherwise specified.
Table 6. TAS5508B Register Settings
Register Register Value Notes
Modulation Index Limit 0x16 0x02 Set modulation index to 97.7%
Master Volume 0xD9 00 00 00 48 Master volume set to 0 dB
Note: These register settings are used for all test, unless otherwise specified.
Table 7. Electrical Data
Electrical Data Notes/Conditions
Output power, BTL, 4 Ω : 90 W 1 kHz, unclipped (0 dBFS), T
A
= 25°C
Output power, BTL, 4 Ω : 120 W 1 kHz, 10% THD+N, T
A
= 25°C
Output power, BTL, 6 Ω : 66 W 1 kHz, unclipped (0 dBFS), T
A
= 25°C
Output power, BTL, 6 Ω : 87 W 1 kHz, 10% THD+N, T
A
= 25°C
Output power, BTL, 8 Ω : 51 W 1 kHz, unclipped (0 dBFS), T
A
= 25°C
Output power, BTL, 8 Ω : 68 W 1 kHz, 10% THD+N, T
A
= 25°C
Output power, PBTL, 2 Ω : 170 W 1 kHz, unclipped (0 dBFS), T
A
= 25°C
Output power, PBTL, 2 Ω : 225 W 1 kHz, 10% THD+N, T
A
= 25°C
Output power, PBTL, 3 Ω : 130 W 1 kHz, unclipped (0 dBFS), T
A
= 25°C
Output power, PBTL, 3 Ω : 170 W 1 kHz, 10% THD+N, T
A
= 25°C
Maximum peak current, BTL: >10 A 1-kHz burst, 1 Ω , R
OC
= 27 k Ω
Maximum peak current, PBTL: >20 A 1-kHz burst, 1 Ω , R
OC
= 27 k Ω
Output stage efficiency: 90% 2 x channels, 8 Ω
Damping factor BTL: 8.5 1 kHz, relative to 4- Ω load
9 SLAU239A – February 2008 – Revised September 2015 TAS5342DDV6EVM
Submit Documentation Feedback
Copyright © 2008–2015, Texas Instruments Incorporated