TAS2552 Datasheet, PDF (5/60 Pages) Texas Instruments – Mono Audio Amplifier with Class-G Boost and Speaker Sense

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TAS2552
SLAS898B – JANUARY 2014 – REVISED APRIL 2015
6.5 Electrical Characteristics
VBAT = 3.6 V, AVDD = IOVDD = 1.8 V, EN = IOVDD, SWS = 0, Gain = 15 dB, ERC = 14 ns, R_L = 8 Ω + 33 µH, 48 kHz
sample rate for digital input, ILIM = 2.5 A (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP
MAX UNIT
BOOST CONVERTER
Boost Output Voltage
Average voltage (w/o including ripple).
Includes load regulation (0-0.6A) and line
regulation (VBAT = 3.0 – 4.8V).
8.5
V
Boost Converter Switching Frequency
1.8
MHz
CLASS-D CHANNEL
Max Analog Input
Full-Scale DAC Output
Load Resistance (Load Spec
Reisistance)
For THD+N < 1%
All digital interface modes
1
1
6
8
V_RMS
V_RMS
Ω
Class-D Frequency
758
kHz
Class-D + Boost Efficiency
VBAT = 5.5, Pout = 1 W (sinewave)
75%
Class-D Output Current Limit (Short VBOOST = 8.5 V, OUT– shorted to VBAT
Circuit Protection)
or VBOOST
3.6
A
Class-D Output Offset Voltage in
Analog Input Mode
VBAT = 3.6 V, AV = 15 dB, RL = 8 Ω,
input shorted to ground through single
capacitor
-7.4
4.6 mV
Class-D Output Offset Voltage in
Digital Input Mode
VBAT = 3.6 V, AV = 15 dB, RL =8 Ω, 0's
data
-9.8
5.6 mV
Programmable Channel Gain Range
(PGA + class-D), minimum
Typical value, analog and digital input
-7
dB
Programmable Channel Gain Range
(PGA + class-D), maximum
Typical value, analog and digital input
24
dB
Programmable Channel Gain Step
(PGA + class-D)
Typical value, analog and digital input
1
dB
Mute Attenuation
Device in shutdown, digital input only
110
dB
Ripple of 200mVpp @ 217 Hz, Gain = 15
dB, analog and digital input
73
VBAT Power Supply Rejection Ratio Ripple of 200mVpp @ 1 kHz, Gain = 15
(PSRR)
dB, analog and digital input
72
dB
Ripple of 200mVpp @ 4 kHz, Gain = 15
dB, analog and digital input
72
Ripple of 200mVpp @ 217 Hz, Gain = 15
dB, analog and digital input
77
AVDD Power Supply Rejection Ratio Ripple of 200mVpp @ 1 kHz, Gain = 15
(PSRR)
dB, analog and digital input
78
dB
Ripple of 200mVpp @ 4 kHz, Gain = 15
dB, analog and digital input
84
Common Mode Rejection Ratio
Ripple of 200mVpp @ 217 Hz, Gain = 15
dB, analog input
59
dB
1 kHz, Po = 0.1W, VBAT = 3.6 V,
RL = 8 Ω
0.1%
THD+N
1 kHz, Po = 0.5W, VBAT = 3.6 V,
RL = 8 Ω
0.1%
1 kHz, Po = 1 W, VBAT = 3.6 V, RL = 8 Ω
0.1%
1 kHz, Po = 2 W, VBAT = 3.6 V, RL = 8 Ω
0.1%
A-wt Filter, Gain = 15 dB, DAC modulator
Output Integrated Noise (20Hz-20kHz) ^switching
- 8Ω
A-wt Filter, Gain = 15 dB, Analog In,
Inputs shorted
114%
µV
114%
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