component
MAX9850ETI+T
Public Made by Adomby adom
Analog Devices Inc./Maxim Integrated Audio Power OpAmps, TQFN-28(5x5). Pinout cross-checked by two models against the datasheet, 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
markdownMAX9850ETI+T
Analog Devices Inc./Maxim Integrated · Audio Power OpAmps · TQFN-28(5x5)
MAX9850ETI+T from Analog Devices Inc./Maxim Integrated, in a TQFN-28(5x5). 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 | LRCLK | bidirectional | Digital audio left-right clock that sets whether SDIN data goes to the left or right channel; it is an input in slave mode and an output in master mode. |
| 2 | BCLK | bidirectional | Digital audio bit clock that is an input in slave mode and an output in master mode. |
| 3 | SDIN | input | Digital audio serial data input. |
| 4 | DVDD | power_in | Digital power-supply input, specified at 1.8V to 3.6V, to be bypassed to DGND with a 1µF ceramic capacitor. |
| 5 | MCLK | input | Master clock input from which all internal digital clocks are derived (up to 40MHz per the features list). |
| 6 | DGND | power_in | Digital ground. |
| 7 | ADD | input | I2C address-select input; connect to AGND, AVDD, or SDA to select one of three possible I2C addresses. |
| 8 | GPIO | bidirectional | General-purpose input/output configured as input or output through the GPIO register, and can generate an interrupt when configured as an output. |
| 9 | INR | input | Right-channel line input that is mixed with the right DAC output. |
| 10 | INL | input | Left-channel line input that is mixed with the left DAC output. |
| 11 | OUTR | output | Line-level right-channel output biased at AGND. |
| 12 | OUTL | output | Line-level left-channel output biased at AGND. |
| 13 | REF | output | Reference output, to be bypassed to AGND with a 1µF ceramic capacitor. |
| 14 | AGND | power_in | Analog ground. |
| 15 | NREG | power_out | Line-output negative regulator output, to be bypassed to AGND with a 1µF capacitor. |
| 16 | PREG | power_out | Line-output positive regulator output, to be bypassed to AGND with a 1µF capacitor. |
| 17 | AVDD | power_in | Analog power supply, specified at 1.8V to 3.6V, to be bypassed to AGND with a 1µF ceramic capacitor. |
| 18 | HPR | output | Right-channel DirectDrive headphone output biased at AGND. |
| 19 | HPL | output | Left-channel DirectDrive headphone output biased at AGND. |
| 20 | SVSS | power_in | Headphone amplifier negative power-supply input, to be connected to PVSS. |
| 21 | HPS | input | Headphone sense input for automatic headphone sensing, to be connected to the jack control pin and left floating if unused. |
| 22 | PVSS | power_out | Inverting charge-pump output, to be bypassed to PGND with a 2.2µF ceramic capacitor and connected to SVSS to supply the headphone amplifiers. |
| 23 | C1N | passive | Charge-pump flying capacitor negative terminal; a 0.47µF ceramic capacitor connects between C1N and C1P. |
| 24 | PGND | power_in | Charge-pump ground. |
| 25 | C1P | passive | Charge-pump flying capacitor positive terminal; a 0.47µF ceramic capacitor connects between C1P and C1N. |
| 26 | PVDD | power_in | Charge-pump and headphone amplifier positive power-supply input, to be bypassed to PGND with 1µF and connected to AVDD for normal operation. |
| 27 | SCL | input | I2C-compatible serial clock input. |
| 28 | SDA | bidirectional | I2C-compatible serial data input/output. |
| 29 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc./Maxim Integrated |
| Package | TQFN-28(5x5) |
| Category | Operational Amplifier/Comparator |
| Pins | 29 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Analog Supply Voltage (AVDD, PVDD) | AVDD, PVDD | 1.8 | 3.6 | V | AVDD = PVDD | 2 | |
| Digital Supply Voltage | DVDD | 1.8 | 3.6 | V | 2 | ||
| Analog Supply Current | AIDD | 5.5 | 7.7 | mA | Full operation (Note 2), no headphone or line output load, AVDD = 1.8V | 2 | |
| Analog Supply Current | AIDD | 3.5 | 5.3 | mA | Full operation (Note 2), headphones disabled, AVDD = 1.8V | 2 | |
| Digital Supply Current | DIDD | 2.1 | 2.9 | mA | Full operation (Note 2), no line output load, DVDD = 1.8V | 2 | |
| Analog Shutdown Current | AISHDN | 1.5 | 10 | µA | IAVDD + IPVDD, AVDD = PVDD = 1.8V | 2 | |
| Digital Shutdown Current | DISHDN | 0.3 | 5 | µA | Static digital interface, DVDD = 1.8V | 2 | |
| 0dBFS Output Voltage | VOUT_FS | 1.85 | 1.95 | 2.05 | VP-P | 2 | |
| Line Output Offset Voltage | VOS_LINE | -15 | 0 | 15 | mV | 3 | |
| Channel-to-Channel Gain Matching | ΔAV/AV | -0.04 | 0.04 | dB | OUTL to OUTR, OUTR to OUTL | 3 | |
| Sampling Frequency Range | fS | 8 | 48 | kHz | 3 | ||
| MCLK Frequency | fMCLK | 8.448 | 40 | MHz | 3 | ||
| Frequency Response | FR | -0.1 | 0.1 | dB | 10Hz to 20kHz | 3 | |
| Line Input Voltage | VIN_LINE | -1 | 1 | V | 3 | ||
| IN_ to OUT_ Gain | AV_LINE | -1.05 | -1 | -0.95 | V/V | 3 | |
| Line Input Bias Voltage | VBIAS_LINE | -15 | 0 | 15 | mV | 3 | |
| INL and INR Input Resistance | RIN_LINE | 10 | 22 | kΩ | 3 | ||
| Headphone 0dBFS Full-Scale Output Voltage | VOUT_FS | 1.16 | 1.23 | 1.3 | VRMS | Volume = +5dB, HP unloaded | 4 |
| Line In to HP Output Voltage Gain | AV_HP | 1.34 | 1.41 | 1.48 | V/V | Volume = +3dB, HP unloaded | 4 |
| Headphone Output Offset Voltage | VOS_HP | -15 | 15 | mV | Volume = -11.5dB, TA = +25°C | 4 | |
| Headphone Output Offset Voltage | VOS_HP | -25 | 25 | mV | Volume = -11.5dB, TA = TMIN to TMAX | 4 | |
| Maximum Capacitive Load | CL | 150 | pF | No sustained oscillations | 4 | ||
| Channel-to-Channel Gain Matching (headphone) | ΔAV/AV | -0.05 | 0.05 | dB | 4 | ||
| Internal Charge-Pump Oscillator Frequency | fCP | 550 | 667 | 775 | kHz | 4 | |
| Charge-Pump Operating Frequency Range | 550 | 775 | kHz | Charge-pump clock derived from MCLK | 4 | ||
| Volume Control Range | -73.5 | 6 | dB | 4 | |||
| Input Leakage Current | IIH, IIL | -10 | 10 | µA | VIH = DVDD, VIL = DGND | 5 | |
| SCL Serial Clock Frequency | fSCL | 0 | 400 | kHz | 6 | ||
| Data Hold Time | tHD, DAT | 0 | 900 | ns | 6 | ||
| SDA and SCL Receiving Rise Time | tR | 300 | ns | Note 8: CB is in pF | 6 | ||
| SDA and SCL Receiving Fall Time | tF | 300 | ns | Note 8: CB is in pF | 6 | ||
| SDA Transmitting Fall Time | tF | 250 | ns | DVDD = 1.8V, TA = +25°C | 6 | ||
| Pulse Width of Suppressed Spike | tSP | 0 | 50 | ns | 6 | ||
| Digital Supply Voltage (absolute) | -0.3 | 4 | V | DVDD, AVDD, PVDD, voltages with respect to AGND | 2 | ||
| AVDD Referenced to PVDD | -0.3 | 0.3 | V | 2 | |||
| SVSS, PVSS | -4 | 0.3 | V | 2 | |||
| SVSS Referenced to PVSS | -0.3 | 0.3 | V | 2 | |||
| DGND, PGND | -0.3 | 0.3 | V | 2 | |||
| BCLK, LRCLK, HPS, SDIN | -0.3 | V | Max = DVDD + 0.3V | 2 | |||
| GPIO, MCLK | -0.3 | 4 | V | 2 | |||
| REF, PREG | -0.3 | V | Max = AVDD + 0.3V | 2 | |||
| SDA, SCL, ADD | -0.3 | 4 | V | 2 | |||
| INL, INR | -2 | 2 | V | 2 | |||
| Current Into/Out of Any Pin | 100 | mA | Into or out of any pin | 2 | |||
| Junction Temperature | 150 | °C | 2 | ||||
| Operating Temperature Range | -40 | 85 | °C | 2 | |||
| Storage Temperature Range | -65 | 150 | °C | 2 | |||
| Lead Temperature | 300 | °C | Soldering, 10s | 2 |
CAD (KiCad official)
- Symbol:
MAX9850ETI+T - Footprint:
Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm - 3D model: TQFN-28(5x5) (KiCad packages3D, STEP)
- 3D model files:
max9850eti-t-etched.step/max9850eti-t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);max9850eti-t.step/max9850eti-t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc./Maxim Integrated datasheet (36 pp, sha256
4e3255799108e3d5, retrieved 2026-10-30, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).