component
MAX9728AEUD+
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Analog Devices Inc Maxim Integrated Audio Amplifiers, TSSOP-14. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX9728AEUD+
Analog Devices Inc Maxim Integrated · Audio Amplifiers · TSSOP-14
MAX9728AEUD+ from Analog Devices Inc Maxim Integrated, in a TSSOP-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUTL | output | Left-channel headphone amplifier output. Ground-referenced (SGND) DirectDrive output; drives headphone loads (16Ω/32Ω) directly with no DC-blocking capacitor required. |
| 2 | VDD | power_in | Positive power-supply input, 4.5V to 5.5V. Bypass with a 1µF ceramic capacitor to PGND placed close to the pin. |
| 3 | C1P | passive | Charge-pump flying-capacitor positive terminal. Connect a 1µF ceramic capacitor between C1P and C1N. Part of the 270kHz charge pump that generates the negative rail PVSS. |
| 4 | PGND | power_in | Power ground for the charge-pump switches. Must be tied to SGND at a single point on the PCB. |
| 5 | C1N | passive | Charge-pump flying-capacitor negative terminal. Connect a 1µF ceramic capacitor from C1P to C1N. |
| 6 | N.C. | unconnected | No connection. Not internally connected; may be left floating or tied to ground for layout convenience. |
| 7 | PVSS | power_out | Charge-pump negative-supply output (approximately -VDD). Connect to SVSS externally and bypass to PGND with a 1µF ceramic hold capacitor (C2). |
| 8 | SHDN | input | Active-low shutdown input (CMOS-level: VIH ≥ 2V, VIL ≤ 0.8V). Drive low to disable both amplifiers and the charge pump (ISHDN < 0.1µA typ); drive high to enable. In shutdown the output impedance is 14kΩ‖RF. |
| 9 | INL | input | Left-channel inverting audio input. AC-couple through an external RIN input resistor (MAX9728A has adjustable gain Av = -RF/RIN); input impedance 15-25kΩ (19kΩ typ on MAX9728B). |
| 10 | SGND | power_in | Signal ground / audio return. Connect to PGND at a single star-ground point; keep audio signal traces separate from PGND switching-current traces. |
| 11 | INR | input | Right-channel inverting audio input. AC-couple through an external RIN input resistor for the MAX9728A adjustable-gain configuration. |
| 12 | SVSS | power_in | Amplifier negative-supply input. Connect externally to PVSS so both amplifiers share the charge-pump's negative rail. |
| 13 | N.C. | unconnected | No connection. Not internally connected; may be left floating. |
| 14 | OUTR | output | Right-channel headphone amplifier output. Ground-referenced DirectDrive output; up to 60mW into 32Ω, 42mW into 16Ω, THD+N = 0.02% at 50mW/32Ω. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | TSSOP-14 |
| Category | Amplifiers/Comparators |
| Pins | 14 |
Ordering variants
Same part, different packaging or reel option.
MAX9728AEUD+MAX9728AEUD+BEUD+MAX9728AEUD+AETC+MAX9728AEUD+BETC+
CAD (KiCad official)
- Symbol:
MAX9728AEUD+ - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (19 pp, sha256
1b31a452c168e104, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).