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BA7740FS-E2
BA7740FS-E2 - Brand New ROHM 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
Product Details
__
VCR Hi-Fi audio signal REC / PB amplifier with flying-erase oscillator
**The BA7745FS has the recording and playback amplifiers required for Hi-
Fi VCR signal processing, and also contains a flying-erase oscillator. The recording system uses a constant-current amplifeir with AGC to eliminate the need to adjust the recording current, and ensure stable operation as the head wears. The IC also features REC MUTE and OVER REC functions .**
The playback system has a high-gain preamplifier, a low-offset head switch, a VCA and an EP-gain amplifier. The flying-erase oscillator has low 2nd and 3rd harmonic distortion, and when connected to an external driver large output current can be obtained.
Features
1) The low-noise playback amplifier has a total gain of 83dB (Typ.). Designed
for VHS-bandoperation with low external parts count. It has two built-in
circuits for Hi-Fi VCR operation.
2) The circuit has been designed to suppress headswitching noise.
3) Built-in EP / SP gain switching function that boosts the playback gain by
5dB.
4) Built-in VCA for easy playback output adjustment.
5) High-output recording amplifier for audio FM recording.
6) Constant-current drive provides stable recording characteristics when the
load (head impedance) is fluctuating.
7) Built-in recording level AGC eliminates the need to adjust recording
current.
8) Built-in low-pass filter limits the input bandwidth of the recording
amplifier.
9) Built-in OVER REC recording current amplifier function and REC MUTE
function that stops recording output.
10) Built-in high-frequency oscillator for use with flying erase function.
11) Record / playback switching can be done directly via the system
controller, and consumes litlle power.
12) Possible to construct a high-performance audio system by pairing this chip
with a Hi-Fi-audio signal processing IC.
Applications
VCRs
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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