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TPA6166A2 Datenblatt(PDF) 7 Page - Texas Instruments

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Teilenummer TPA6166A2
Bauteilbeschribung  3.5-mm Jack Detect and Headset Interface IC
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
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TPA6166A2
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SLAS997B – MARCH 2014 – REVISED JANUARY 2015
6.7 Electrical Characteristics, Mic Preamplifier and Bias
VDD = 1.8 V, MICVDD = 3.0 V, TA = 25°C (unless otherwise noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
MICROPHONE BIAS
Programmed for high value, MICVDD
≥ 2.8 V
2.45
2.6
2.75
VBIAS
Microphone bias voltage
V
Programmed for low value
1.88
2.0
2.12
IOUT
Max bias output current
Internal bias resistor bypassed (MICR = 011)
1.2
mA
MICR = 000
2.09
2.2
2.31
MICR = 001
2.47
2.6
2.73
RBIAS
Bias output resistance
k
Ω
MICR = 010
2.85
3.0
3.15
MICR = 011
0.13
Between SLEEVE and RING2, BW = 100 Hz to 7 kHz,
2.0
EN
Bias output noise(1)
2.2 k
Ω load between SLEEVE and RING2, MICR = 000,
µVRMS
VBIAS = 2.0 V
f = dc,
92
MICVDD = 2.8 V to
3.6 V
Measured between SLEEVE and
f = 2 kHz, 100 mVP-P
73
RING2, 2.2 k
Ω load between
PSRR
Power supply rejection ratio
ripple,
dB
SLEEVE and RING2,
MICVDD = 3.0 V
MICR = 000, VBIAS = 2.6 V
f = 2 kHz, 100 mVP-P
73
ripple,
MICVDD = 2.8 V
Measured between Mic and GND
1500
20000
MicZ
Microphone Capsule Impedance
Ω
before insertion
MICROPHONE PREAMPLIFIER
Programmed for high value, f = 997 Hz
23
24
25
AV
Preamplifier gain
dB
Programmed for low value, f = 997 Hz
11
12
13
EN
Input referred noise(1)
f = 100 Hz to 7 kHz, AV = 24 dB, Mic on SLEEVE, 2.2 kΩ
3.4
µVRMS
load between SLEEVE and RING2, MICR = 000,
VBIAS = 2.0 V
THD+N
Total harmonic distortion plus
VOUT = 1 VRMS
0.095
noise
%
Measured between MOUTP-MOUTN, 6.04 k
Ω between
74
SLEEVE and RING2, MICR = 010, VBIAS = 2.0 V, f = dc,
MICVDD = 2.4 V to 3.6 V
Measured between MOUTP-
f = dc,
109.5
PSRR
Power supply rejection ratio
dB
MOUTN, 2.2 k
Ω between
MICVDD = 2.8 V to
SLEEVE and RING2,
3.6 V
MICR = 000, VBIAS = 2.6 V
f = 2 kHz, 100 mVP-P
78
ripple on MICVDD
VCMO
Output Common Mode
MICVDD = 2.4 V – 3.6V
0.4×MICVDD
V
fC,LO
Lower -3 dB frequency of HPF(2)
20
Hz
fC,HI
Upper -3 dB frequency of
260
kHz
amplifier(2)
(1)
A-weighted
(2)
Measured with respect to gain at 997 Hz
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