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High-quality PCM2704/5/6/7 USB Audio DAC ICs. Perfect for DIY USB soundcards & student projects. No software needed—plug & play. Fast shipping allover Pakistan!
pcm2705 28-tssop
pcm2705 pinout
pcm2705 function diagram
Description
The PCM2704/5/6/7 is TI's single-chip USB stereo audio DAC with USB-compliant full-speed protocol controller and S/PDIF. The USB-protocol controller works with no software code, but USB descriptors can be modified in some parts (for example, vendor ID/product ID) through the use of an external ROM (PCM2704/6), SPI (PCM2705/7), or on request. The modification of the USB descriptor through external ROM or SPI must comply with USB-IF guidelines, and the vendor ID must be your own ID as assigned by the USB-IF. The descriptor also can be modified by changing a mask; contact your representative for details. The PCM2704/5/6/7 employs SpAct architecture, TI's unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback with low clock jitter.
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Features
On-Chip USB Interface:
No Need of Dedicated Device Driver
With Full-Speed Transceivers
Fully Compliant With USB 1.1 Specification
Certified by USB-IF
Partially Programmable Descriptors
Adaptive Isochronous Transfer for Playback
Bus-Powered or Self-Powered Operation
Sampling Rate: 32, 44.1, 48 kHz
On-Chip Clock Generator With Single 12-MHz Clock Source
Single Power Supply:
Bus-Powered: 5 V, Typical (VBUS)
Self-Powered: 3.3 V, Typical
16-Bit Delta-Sigma Stereo DAC
Analog Performance at 5 V (Bus-Powered),
3.3 V (Self-Powered): THD+N: 0.006% RL > 10 kΩ, Self-Powered THD+N: 0.025% RL = 32 Ω SNR = 98 dB Dynamic Range: 98 dB PO = 12 mW, RL = 32 ΩOversampling Digital Filter Pass-Band Ripple = ±0.04 dBStop-Band Attenuation = -50 dB
Single-Ended Voltage Output
Analog LPF Included
Multiple Functions:
Up to Eight Human Interface Device (HID) Interfaces (Depending on Model and Settings)
Suspend Flag
S/PDIF Out With SCMS
External ROM Interface (PCM2704/6)
Serial Programming Interface (PCM2705/7)
I2S Interface (Selectable on PCM2706/7)
Parameters
Number of DAC channels: 0
Sampling rate (min) (kHz) : 32
Sampling rate (max) (kHz) : 48
THD+N (dB) : -84
Control interface: HID, SPI
Resolution (Bits): 16
DAC SNR (typ) (dB): 0
Analog outputs: 2
Architecture: USB 1.1
Operating temperature range (°C): -25 to 85
applications
USB Headphones Playback
USB Audio Speaker
USB CRT/LCD Monitor
USB Audio Interface Box
USB-Featured Consumer Audio Product
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