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MC145540DW
MC145540DW - Brand New MOTOROLA 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
INTRODUCTION
The MC145540 ADPCM Codec is a single chip implementation of a PCM codec-filter and an ADPCM encoder/decoder, and therefore provides an efficient solution for applications requiring the digitization and compression of voiceband signals. This device is designed to operate over a wide voltage range, 2.7 to 5.25 V, and as such is ideal for battery powered as well as ac powered applications. The MC145540 ADPCM Codec also includes a serial control port and internal control and status registers that permit a microcontroller to exercise many built-in features.
FEATURES
Key features of the MC145540 ADPCM Codec include:
• Single 2.7 to 5.25 V Power Supply
• Typical 3 V Power Dissipation of 55 mW, Power Down of 0. 15 mW
• Differential Analog Circuit Design for Lowest Noise
• Complete Mu-Law and A-Law Companding PCM Codec/Filter
• ADPCM Transcoder for 64, 32, 24, and 16 kbps data rates
• Universal Programmable Dual Tone Generator
• Programmable Transmit Gain, Receive Gain, and Sidetone Gain
• Low Noise, High Gain, Three Terminal Input Operational Amplifier for
Microphone Interface
• Push-Pull 300 Ω Power Drivers with External Gain Adjust for Receiver
Interface
• Push-Pull 300 Ω Auxiliary Output Drivers for Ringer Interface
• Voltage Regulated Charge Pump to Power the Analog Circuitry in Low Voltage
Applications
• Receive Side Noise Burst Detect Algorithm
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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