NXP Semiconductors
TFA9872_SDS
High Efficiency Class-D Audio Amplifier with Speaker-as-Microphone
TFA9872_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product short data sheet Rev. 1 — 12 April 2017
COMPANY PUBLIC 4 / 32
5 Ordering information
Table 2. Ordering information
PackageType number
Name Description Version
TFA9872AUK/N1 WLCSP42 wafer level chip-scale package; 42 bumps; 3.13 × 2.46 × 0.50 mm SOT1459-2
TFA9872CUK/N1 WLCSP42 wafer level chip-scale package; 42 bumps; 3.13 × 2.46 × 0.525 mm SOT1459-2
NXP Semiconductors
TFA9872_SDS
High Efficiency Class-D Audio Amplifier with Speaker-as-Microphone
TFA9872_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product short data sheet Rev. 1 — 12 April 2017
COMPANY PUBLIC 5 / 32
6 Block diagram
aaa-021841
I
2
C
INTERFACE
PDM
INTERFACE
MANAGER
GAIN
GAIN AND
SIGN
SIGN
PLL
FS
BCK
CGUOSC1M
1ch INT
CARDEC
(2ch)
2x DEC DEC
PGA
TEMP SENSE
Vbat SENSE
A
D
C
A
D
C
Vddp SENSE
low latency
speaker as mic
I
2
S/TDM
INPUT
INTERFACE
INTELLIGENT
DC-DC
CONVERTER
VBST
GNDB
VDDD
GNDP
VDDP
AUXSAMP
AUXSAMN
GNDD
I/V SENSE
PROCESSING
AND
DATA
SELECTOR
I
2
S/TDM
OUTPUT
INTERFACE
INTERRUPT
HANDLER
SCL
SDA
RST
INT
DATAI
BCK
FS
PDMDAT
DATAO
PDMCLK
MTP REGISTERS
MAX ChL OR ChR
TEST1 TEST2 TRSTN
ADS1 ADS2 VBAT VDDE INB
CLASS-D
SPK AMP
HPF
GAIN
CLIPPER
PWM
+
FRACTIONAL
DELAY
ALIGN (I/V)
voltage
sensing
current sensing
speaker
as mic.
PROTECTIONS:
OTP
OVP
UVP
OCP
OUTA
OUTB
Figure 1. Block diagram
NXP Semiconductors
TFA9872_SDS
High Efficiency Class-D Audio Amplifier with Speaker-as-Microphone
TFA9872_SDS All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product short data sheet Rev. 1 — 12 April 2017
COMPANY PUBLIC 6 / 32
7 Pinning information
7.1 Pinning
1 2 3
G
F
4 5 6
C
B
A
aaa-021938
bump A1
index area
E
D
1 2 3
E
F
4
5 6
aaa-021939
bump A1
index area
G
A
B
C
D
Bottom view Transparent top view
Figure 2. Bump configuration
A
2 3 4 5 61
GNDD OUTB
VDDP
DATAODATAIFS
GNDP
GNDP VDDP
RSTINTBCK
GNDD OUTA VDDPTRSTNPDMDATPDMCLK
GNDD OUTA VBSTTEST2AUXSAMPSCL
GNDB
INB VBSTTEST1AUXSAMNSDA
GNDB INB VBSTGNDDADS1VDDD
GNDB INB VBSTVBATADS2VDDE
aaa-021936
B
C
D
E
F
G
Figure 3. Bump mapping
Transparent top view

TFA9872CUK/N1Z

Mfr. #:
Manufacturer:
NXP Semiconductors
Description:
Audio Amplifiers TFA9872CUK/WLCSP42//N1/REEL 7 Q1 DP CIRCUIT ELEME
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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