AT73C240 — Overview
AT73C240 by Microchip is a component in the Audio Interface / Audio Companion IC (20-bit Stereo DAC + Mono Class-AB Speaker Amp) category, supplied by Shenzhen Jinteng Electronics Technology Co., Ltd. (JTDZ Tech) — an independent distributor serving OEMs, ODMs and EMS providers worldwide.
The AT73C240 is an audio companion IC for portable handsets that combines a 20-bit stereo sigma-delta audio DAC with a mono audio power amplifier and stereo 32 ohm headset drivers. The speaker amplifier is a fully differential analog class-AB stage delivering 440 mW into 8 ohm from a 3.0-5.5 V battery rail, and it can be fed directly from the DAC or from the stereo line inputs. Control is via SPI or TWI and audio data via I2S at up to 48 kHz.
Key specifications
| Part number | AT73C240 |
| Manufacturer | Microchip |
| Device type | Stereo Audio DAC with Mono Speaker Amplifier |
| Package | QFN-32 |
| Package size | 5.00 x 5.00 x 0.90 mm |
| Stock | 1,500 pcs |
| Condition | Original, genuine & unused |
Datasheet parameters
| DAC resolution | Stereo 20-bit multi-bit sigma-delta |
| Playback SNR | 90 dB |
| Speaker amplifier | Mono, fully differential class-AB, 440 mW into 8 ohm |
| Headset drivers | Stereo 32 ohm, 20 mW per channel with master volume and mute |
| Sampling rates | 8 / 11.025 / 16 / 22.05 / 24 / 32 / 44.1 / 48 kHz |
| Analog supply (AVDD, AVDDHS) | 2.7 to 3.3 V |
| Digital supply (VDIG) | 2.4 to 3.3 V |
| Speaker supply (VBAT) | 3.0 to 5.5 V |
| Audio data interface | I2S, MCLK = 256x or 384x Fs |
| Control interface | 4-wire SPI or 2-wire TWI (I2C) |
| Volume control | DAC -34.5 to +12 dB in 1.5 dB steps; speaker amp -22 to +20 dB |
| Shutdown current | < 2 uA |
| Operating temperature | -40 to +85 °C |
| Package | 32-pin QFN 5 x 5 mm exposed pad |
Parameters above are transcribed from the manufacturer datasheet for reference only. Confirm the current datasheet revision and your application conditions before design-in.
Note: Correction to the brief: this is NOT a class-D amplifier and not a power-management-only PMIC - it is a stereo audio DAC plus a class-AB (linear, fully differential) mono speaker amplifier, i.e. an 'audio companion' PMIC. Atmel document 6464A (28-Apr-09); status is obsolete at Microchip, available from independent stock. 32 pins plus exposed pad (pin 33 = GNDA).
Stock, packaging and availability
| Item | Detail |
|---|---|
| Available quantity | 1,500 pcs |
| Condition | Original, genuine & unused |
| Packaging | Original factory packaging — tape & reel, tray, tube or bulk as supplied by the manufacturer |
| Warehouse | Shenzhen, China |
| Lead time | Confirmed per order — typically ships within 24–48 hours after payment |
Stock levels move quickly. Confirm current availability, quantity and lead time with our team before ordering.
Need a quote for AT73C240? Send your target quantity, destination and required date code to our sales team — we reply with price, stock and lead time within 2 working hours.
Browse the full Amplifiers / Data Conversion collection for more Audio DAC with Amplifier devices, or request a quote for AT73C240.
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Frequently asked questions
Is AT73C240 original and genuine?
Yes. We supply AT73C240 as original, unused stock sourced through long-verified, traceable channels. Traceability documents, inspection reports and photos of the actual goods can be provided on request before you commit.
How much AT73C240 stock do you have?
1,500 pcs of AT73C240 are currently listed. Stock moves daily - send us your required quantity and we will confirm live availability, date code and lead time.
What package does AT73C240 use?
AT73C240 is supplied in a QFN-32 package (5.00 x 5.00 x 0.90 mm). Always confirm the package, pinout and land pattern against the current manufacturer datasheet before design-in.
Can you help confirm the AT73C240 parameters?
Yes. Tell us the parameters you are qualifying (frequency range, gain, attenuation, voltage, current or temperature range) and our team will help you confirm them against the current manufacturer datasheet. We do not host third-party datasheets.
Do you quote volume orders for AT73C240?
Yes. We quote volume pricing, available quantity and lead time within 2 working hours, and we can consolidate AT73C240 with other line items into a single shipment.
All trademarks, brand names and part numbers are the property of their respective owners. JTDZ Tech is an independent distributor and is not an authorised distributor, franchisee or agent of the manufacturers named above.
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