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TLV320AIC20CPFB

Texas Instruments · Audio Interface ICs · TQFP-48(7x7)

TLV320AIC20CPFB from Texas Instruments, in a TQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	HDSI-	input	Head-set differential input signal (negative terminal) that can be treated similar to line-input pins.
2	HDSI+	input	Head-set differential input signal (positive terminal) that can be treated similar to line-input pins.
3	HDSO-	output	Head-set differential output signal (negative terminal) with 150Ω load impedance.
4	HDSO+	output	Head-set differential output signal (positive terminal) with 150Ω load impedance.
5	AVDD2	power_in	Analog power supply pin with recommended operating range of 2.7V to 3.6V.
6	AVSS2	power_in	Analog ground reference connection.
7	TESTP	input	Test pin that should be connected to digital ground.
8	NC	unconnected	Not connected internally.
9	PWRDN	input	Power-down mode control input.
10	SDA	bidirectional	I2C/S2C serial data input/output line.
11	SCL	input	I2C/S2C serial clock input.
12	IOVDD	power_in	Digital I/O power supply with recommended operating range of 1.1V to 3.6V.
13	IOVSS	power_in	Digital I/O ground reference connection.
14	FSD	output	Frame synchronization signal delayed output.
15	DVDD	power_in	Digital core power supply with recommended operating range of 1.65V to 1.95V (1.8V nominal).
16	DVSS	power_in	Digital core ground reference connection.
17	DOUT	output	Serial port data output.
18	DIN	input	Serial port data input.
19	FS	bidirectional	Frame synchronization signal input/output.
20	SCLK	bidirectional	Serial port bit clock input/output.
21	M/S	input	Master/slave mode select input applied to CODEC1 only; CODEC2 is always a slave.
22	MCLK	input	Master clock input with maximum frequency of 100MHz.
23	RESET	input	Asynchronous reset input.
24	VSS	power_in	Device ground reference that should typically be connected to analog ground.
25	DRVSS1	power_in	Analog output driver stage ground reference connection.
26	SPKO+	output	Speaker differential output signal (positive terminal) with 8Ω load impedance.
27	DRVDD	power_in	Analog output driver power supply with recommended operating range of 2.7V to 3.6V.
28	SPKO-	output	Speaker differential output signal (negative terminal) with 8Ω load impedance.
29	DRVSS2	power_in	Analog output driver stage ground reference connection.
30	CIDI-	input	Caller-ID differential input signal (negative terminal) that can be treated similar to line-input pins.
31	CIDI+	input	Caller-ID differential input signal (positive terminal) that can be treated similar to line-input pins.
32	AVSS1	power_in	Analog ground reference connection.
33	AVDD1	power_in	Analog power supply pin with recommended operating range of 2.7V to 3.6V.
34	MICI-	input	Microphone differential input signal (negative terminal).
35	MICI+	input	Microphone differential input signal (positive terminal).
36	MICBIAS	input	Microphone bias voltage output for external microphone impedance.
37	LCDAC	output	6-bit digital-to-analog converter output for LCD display control.
38	HNSO-	output	Hand-set speaker differential output signal (negative terminal) with 150Ω load impedance.
39	HNSO+	output	Hand-set speaker differential output signal (positive terminal) with 150Ω load impedance.
40	HNSI-	input	Hand-set differential input signal (negative terminal) that can be treated similar to line-input pins.
41	HNSI+	input	Hand-set differential input signal (positive terminal) that can be treated similar to line-input pins.
42	AVDD	power_in	Analog power supply pin with recommended operating range of 2.7V to 3.6V.
43	AVSS	power_in	Analog ground reference connection.
44	LINEI+	input	Line differential input signal (positive terminal).
45	LINEI-	input	Line differential input signal (negative terminal).
46	LINEO-	output	Line differential output signal (negative terminal) with 600Ω load impedance.
47	LINEO+	output	Line differential output signal (positive terminal) with 600Ω load impedance.
48	NC	unconnected	Not connected internally.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	TQFP-48(7x7)
Category	Interface
Pins	48

CAD (KiCad official)

Symbol: TLV320AIC20CPFB
Footprint: Package_QFP:TQFP-48_7x7mm_P0.5mm
3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
3D model files: tlv320aic20cpfb-etched.step / tlv320aic20cpfb-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tlv320aic20cpfb.step / tlv320aic20cpfb.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Texas Instruments datasheet (59 pp, sha256 7a5a9cd5d93147bf, retrieved 2026-10-06, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF