MAX98089ETN+ from Maxim Integrated, in a QFN-56-EP(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	SDOUTS2	output	S2 digital audio serial-data ADC output, with output voltage referenced to DVDDS2.
2	BCLKS2	bidirectional	S2 digital audio bit clock, an input in slave mode and an output in master mode, with voltage referenced to DVDDS2.
3	DGND	power_in	Digital ground.
4	LRCLKS2	bidirectional	S2 digital audio left-right clock (frame sync pulse in TDM mode), an input in slave mode and an output in master mode, with voltage referenced to DVDDS2.
5	MCLK	input	Master clock input accepting 10MHz to 60MHz.
6	DVDDS1	power_in	S1 digital audio interface power-supply input, bypassed to DGND with a 1µF capacitor.
7	SDOUTS1	output	S1 digital audio serial-data ADC output, with output voltage referenced to DVDDS1.
8	BCLKS1	bidirectional	S1 digital audio bit clock, an input in slave mode and an output in master mode, with voltage referenced to DVDDS1.
9	SDINS1	input	S1 digital audio serial-data DAC input, with voltage referenced to DVDDS1.
10	LRCLKS1	bidirectional	S1 digital audio left-right clock (frame sync pulse in TDM mode), an input in slave mode and an output in master mode.
11	N.C.	unconnected	No connection.
12	N.C.	unconnected	No connection.
13	N.C.	unconnected	No connection.
14	N.C.	unconnected	No connection.
15	SPKRN	output	Negative right-channel Class D speaker output.
16	SPKRGND	power_in	Right-speaker ground.
17	SPKRP	output	Positive right-channel Class D speaker output.
18	SPKRVDD	power_in	Right-speaker power supply, bypassed to SPKRGND with a 1µF capacitor.
19	SPKLVDD	power_in	Left-speaker, REF and receiver amp power supply, bypassed to SPKLGND with a 1µF and a 10µF capacitor.
20	SPKLP	output	Positive left-channel Class D speaker output.
21	SPKLGND	power_in	Left-speaker ground.
22	SPKLN	output	Negative left-channel Class D speaker output.
23	RECN/LOUTR/RXINN	bidirectional	Negative receiver amplifier output or right line output; can be the negative bypass switch input when the receiver amp is shut down.
24	RECP/LOUTL/RXINP	bidirectional	Positive receiver amplifier output or left line output; can be the positive bypass switch input when the receiver amp is shut down.
25	PVDD	power_in	Headphone power supply, bypassed to HPGND with a 1µF and a 10µF capacitor.
26	C1P	passive	Charge-pump flying capacitor positive terminal; connect a 1µF ceramic capacitor between C1N and C1P.
27	C1N	passive	Charge-pump flying capacitor negative terminal; connect a 1µF ceramic capacitor between C1N and C1P.
28	N.C.	unconnected	No connection.
29	N.C.	unconnected	No connection.
30	HPGND	power_in	Headphone ground.
31	HPVSS	power_out	Inverting charge-pump output, bypassed to HPGND with a 1µF ceramic capacitor.
32	HPVDD	power_out	Noninverting charge-pump output, bypassed to HPGND with a 1µF ceramic capacitor.
33	HPL	output	Left-channel headphone output.
34	HPSNS	input	Headphone amplifier ground sense; connect to the headphone jack ground terminal for optimal performance or to PCB ground.
35	HPR	output	Right-channel headphone output.
36	INB2	input	Single-ended line input B2, also the positive differential line input B.
37	INB1	input	Single-ended line input B1, also the negative differential line input B.
38	INA2/EXTMICN	input	Single-ended line input A2, also positive differential line input A or negative differential external microphone input.
39	INA1/EXTMICP	input	Single-ended line input A1, also negative differential line input A or positive differential external microphone input.
40	MIC1P/DIGMICDATA	input	Positive differential microphone 1 input, AC-coupled with a series 1µF capacitor; can be retasked as a digital microphone data input.
41	MIC1N/DIGMICCLK	bidirectional	Negative differential microphone 1 input, AC-coupled with a series 1µF capacitor; can be retasked as a digital microphone clock output.
42	MIC2P	input	Positive differential microphone 2 input, AC-coupled with a series 1µF capacitor.
43	MIC2N	input	Negative differential microphone 2 input, AC-coupled with a series 1µF capacitor.
44	MICBIAS	power_out	Low-noise 2.2V microphone bias output; place an external 2.2kΩ resistor between MICBIAS and the microphone output.
45	JACKSNS	input	Jack sense input that detects insertion and removal of a jack; typically connected to the MIC pole of the jack.
46	N.C.	unconnected	No connection.
47	AGND	power_in	Analog ground.
48	REF	passive	Converter reference, bypassed to AGND with a 2.2µF capacitor.
49	REG	passive	Common-mode voltage reference, bypassed to AGND with a 1µF capacitor.
50	AVDD	power_in	Analog power supply, bypassed to AGND with a 1µF capacitor.
51	SCL	input	I2C serial-clock input; connect a pullup resistor to DVDD.
52	SDA	bidirectional	I2C serial-data input/output; connect a pullup resistor to DVDD for full output swing.
53	DVDD	power_in	Digital power supply for the digital core and I2C interface, bypassed to DGND with a 1µF capacitor.
54	SDINS2	input	S2 digital audio serial-data DAC input, with voltage referenced to DVDDS2.
55	DVDDS2	power_in	S2 digital audio interface power-supply input, bypassed to DGND with a 1µF capacitor.
56	IRQ	output	Hardware interrupt output that can be programmed to pull low on status register 0x00 changes; connect a 10kΩ pullup resistor to DVDD for full output swing.
57	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	Maxim Integrated
Package	QFN-56-EP(7x7)
Category	Interface ICs
Pins	57

CAD (KiCad official)

Symbol: MAX98089ETN+
Footprint: Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP4x4mm
3D model: QFN-56-EP(7x7) (KiCad packages3D, STEP)
3D model files: max98089etn-etched.step / max98089etn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); max98089etn.step / max98089etn.glb are the bare package body.

Provenance

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

Datasheet: Maxim Integrated datasheet (133 pp, sha256 891c4d2f5cc45e8c, retrieved 2026-10-31, tier: manufacturer)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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

MAX98089ETN+

Changed since verified MAX98089ETN+

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README

MAX98089ETN+

Pinout

Key specifications

CAD (KiCad official)

Provenance