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MSM7731-03
MSM7731-03 - Brand New Oki Semiconductor IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
GENERAL DESCRIPTION
The MSM7731 is an LSI device developed for portable, handsfree communication
with built-in line echo canceler, acoustic echo canceler, and transmission
signal noise canceler. Built-in to the voice signal interface is a linear
CODEC for the analog interface on the acoustic-side, and a linear CODEC for
the analog interface on the line-side. On the line-side, in addition to the
analog interface, there is also a m-law PCM/16-bit linear digital interface.
Equipped with gain and mute controls for data transmission and reception, a
m-law PCM/16-bit linear digital interface for memo recording and message
output, and transfer clock and sync clock generators for digital
communication, this device is ideally suited for a handsfree system.
FEATURES
• Single 3 V power supply operation (2.7 V to 3.6 V)
• Built-in 2-channel (line and acoustic) echo canceler
Echo attenuation : 35 dB (typ.)
Cancelable echo delay time :
Line echo canceler + acoustic echo canceler : Tlined = 27 ms (max.), Tacoud =
59 ms – Tlined (max.)
Acoustic echo canceler only : Tacoud = 59 ms (max.)
• Built-in transmission signal noise canceler Noise attenuation: 13 dB (typ.)
for white noise 40 dB (typ.) for single tone
• Built-in 2-channel CODEC Synchronous transmission and reception enables full
duplex operation
• Built-in analog input gain amp stage (max. gain = 30 dB)
• Analog output configuration: Push-pull drive (can drive a 1.2 kW load)
• Built-in transmit slope filter
• Digital interface coding formats: m-law PCM, 16-bit linear (2's complement)
• Digital interface sync formats: Normal-sync, short-frame-sync
• Built-in digital transmission clock generators Sync clock (SYNC): 8 kHz
output
Transmission clock (BCLK): 64 kHz output (m-law PCM)/128 kHz output (16-bit
linear)
• Digital transmission rate
External input: 64 kbps to 2048 kbps
Internal generation: 64 kbps (m-law PCM)/128 kbps (16-bit linear)
• Fixed digital interface sync clock (SYNC) enables automatic power-down
• Master clock frequency: 19.2 MHz
Compatible with crystal oscillator and crystal
• Low power consumption
Operating mode: typ. 105mW (when VDD = 3.0 V)
Power-down mode: typ. 0.3mW (when VDD = 3.0 V)
• Control by both the serial microcomputer interface and parallel port is
possible
• Transmit/receive mute function, transmit/receive programmable gain setting
• Package: 64-pin plastic QFP (QFP64-P-1414-0.80-BK) (Product name:
MSM7731-01GA)
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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