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TPA2025D1YZGR Fiches technique(PDF) 6 Page - Texas Instruments

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No de pièce TPA2025D1YZGR
Description  2 W Constant Output Power Class-D Audio Amplifier with Class-G Boost Converter
Download  23 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPA2025D1YZGR Fiches technique(HTML) 6 Page - Texas Instruments

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TPA2025D1
SLOS717A
– AUGUST 2011 – REVISED FEBRUARY 2012
www.ti.com
OPERATING CHARACTERISTICS (continued)
VBAT= 3.6 V, EN = VBAT, AGC = GND, TA = 25°C, RL = 8 Ω + 33 μH (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
200 mVPP square ripple, VBAT = 3.8 V, f = 217 Hz
71
AC-Common mode rejection ratio
AC CMRR
dB
(output referred)
200 mVPP square ripple, VBAT = 3.8 V, f = 1 kHz
71
AUTOMATIC GAIN CONTROL
AGC maximum attenuation
10
dB
AGC attenuation resolution
0.5
dB
AGC attack time (gain decrease)
20
µs/dB
AGC release time (gain increase)
1.6
s/dB
Gain vs VBAT slope
VBAT
< inflection point
7.5
dB/V
AGC inflection point
AGC = Float
3.25
(Note: AGC pin voltage is read only
AGC = GND
3.55
at device power-up. A device power
V
cycle is required to change AGC
AGC = VBAT
3.75
inflection points.)
TEST SET-UP FOR GRAPHS
(1)
The 1
µF input capacitors on IN+ and IN- were shorted for input common-mode voltage measurements.
(2)
A 33
µH inductor was placed in series with the load resistor to emulate a small speaker for efficiency measurements.
(3)
The 30 kHz low-pass filter is required even if the analyzer has an internal low-pass filter. An R-C low-pass filter
(100
Ω, 47 nF) is used on each output for the data sheet graphs.
6
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Copyright
© 2011–2012, Texas Instruments Incorporated
Product Folder Link(s): TPA2025D1


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