3pcs CJMCU-832 PAM8302 Single Channel Class D Audio Power Amplifier Development Board
Description:
This super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8Ω speaker at over half a Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot. There's even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain. This board is a welcome upgrade to basic "LM386" amps! CJMCU
The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pin to ground. The output is "Bridge Tied" - that means the output pins connect directly to the speaker pins, no connection to ground. The output is a high frequency 250KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output into another amplifier, it should drive the speakers directly. CJMCU
Comes with a fully assembled and tested board. We also include header to plug it into a breadboard and a 3.5mm screw-terminal blocks so you can easily attach/detach your speaker. You will be ready to rock in 15 minutes!
Features:
- Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply
- 50dB PSRR at 1KHz
- Filterless design, with ferrite bead + capacitors on output.
- Fixed 24dB gain, onboard trim potentiometer for adjusting input volume.
- Thermal and short-circuit/over-current protection
- Low current draw: 4mA quiescent and 1uA in shutdown mode
Note:
Speaker is not included, use any 4 ohm or greater impedance speaker.
Package included:
3 x Audio Power Amplifier
,
,
This super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficient (over 90% efficient when driving an 8Ω speaker at over half a Watt) - making it perfect for portable and battery-powered projects. It has built in thermal and over-current protection but we could barely tell it got hot. There's even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain. This board is a welcome upgrade to basic "LM386" amps! CJMCU
The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pin to ground. The output is "Bridge Tied" - that means the output pins connect directly to the speaker pins, no connection to ground. The output is a high frequency 250KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard. All the above means that you can't connect the output into another amplifier, it should drive the speakers directly. CJMCU
Comes with a fully assembled and tested board. We also include header to plug it into a breadboard and a 3.5mm screw-terminal blocks so you can easily attach/detach your speaker. You will be ready to rock in 15 minutes!
Features:
- Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply
- 50dB PSRR at 1KHz
- Filterless design, with ferrite bead + capacitors on output.
- Fixed 24dB gain, onboard trim potentiometer for adjusting input volume.
- Thermal and short-circuit/over-current protection
- Low current draw: 4mA quiescent and 1uA in shutdown mode
Note:
Speaker is not included, use any 4 ohm or greater impedance speaker.
Package included:
3 x Audio Power Amplifier
,
,
(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.
Shipping and Delivery Estimates
We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.
Note:
(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.
(2) Business days do not include Saturday/Sunday and any public holidays.
(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.
(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.
for more information please visit our Shipping Policy Page.
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Sizing & Fit Guide
Please be aware that most of our clothing is Juniors' sizing, which runs smaller than regular US / European Women sizing. Refer to the measurements chart for each individual product to determine the best size for you. Product specific size chart and information can be found in product description or in product picture gallery.
Our team does it's best to include accurate size details and measurement of each item in the product descriptions. If you have questions regarding sizing or any other information on a specific item, please email us at support@mrslm.com for specific details.
Find the best size
When comparing your measurements to those listed on the site, make sure to check if the fabric is stretchy or not. If it is, it can stretch an inch or more.
- Bust: Wrap the measuring tape loosely around the fullest part of your bust to ensure a comfortable fit.
- Waist: Measure the narrowest part of your natural waist, holding the measuring tape loose enough to fit comfortably.
- Hips: Drape the measuring tape around the widest part of your hips, resting the tape comfortably against your body.
- Length: For tops and dresses, measure from the top of your shoulder to the hem. For strapless dresses, measure from the highest part of the neckline to the hem. For pants and skirts, measure from the top of the waist to the hem.
- Sleeve: With your arm outstretched, measure from the base of your neck to the end of the sleeve hem to determine where the sleeve length will fall on you.
Size Chart
Dresses Size Chart
Dress Size Chart (Inch)
|
DRESSES SIZE IN INCHES |
||||
| SIZE | US / CAN | BUST | WAIST | HIPS |
| XS | 0 | 31"-32" | 24"-25" | 34"-35" |
| S | 2-4 | 33"-34" | 26"-27" | 36"-37" |
| M | 6-8 | 35"-36" | 28"-29" | 38"-39" |
| L | 10-12 | 37"-39" | 30"-32" | 40"-42" |
| XL | 14 | 40"-42" | 33"-35" | 43"-45" |
Dress Size Chart (cm)
|
DRESSES SIZE IN CM |
||||
| SIZE | US / CAN | BUST | WAIST | HIPS |
| XS | 0 | 78.7-81.2 | 60.9-63.5 | 86.3-88.9 |
| S | 2-4 | 83.8-86.3 | 66-68.5 | 91.4-93.9 |
| M | 6-8 | 88.9-91.4 | 71.1-73.6 | 96.5-99 |
| L | 10-12 | 93.9-99 | 76.2-81.2 | 101.6-106.6 |
| XL | 14 | 101.6-106.6 | 81.2-88.9 | 109.2-114.3 |
Tops Size Chart
Tops Size Chart (Inch)
|
TOPS SIZE IN INCHES |
|||
| SIZE | US / CAN | BUST | WAIST |
| XS | 0 | 31"-32" | 24"-25" |
| S | 2-4 | 33"-34" | 26"-27" |
| M | 6-8 | 35"-36" | 28"-29" |
| L | 10-12 | 37"-39" | 30"-32" |
| XL | 14 | 40"-42" | 33"-35" |
Tops Size Chart (cm)
|
TOPS SIZE IN CM |
|||
| SIZE | US / CAN | BUST | WAIST |
| XS | 0 | 78.7-81.2 | 60.9-63.5 |
| S | 2-4 | 83.8-86.3 | 66-68.5 |
| M | 6-8 | 88.9-91.4 | 71.1-73.6 |
| L | 10-12 | 93.9-99 | 76.2-81.2 |
| XL | 14 | 101.6-106.6 | 83.8-88.9 |
Bottoms Size Chart
Bottoms Size Chart (Inch)
|
BOTTOMS SIZE IN INCHES |
|||
| SIZE | US / CAN | WAIST | HIPS |
| XS | 0 | 24"-25" | 34"-35" |
| S | 2-4 | 26"-27" | 36"-37" |
| M | 6-8 | 28"-29" | 38"-39" |
| L | 10-12 | 30"-32" | 40"-42" |
| XL | 14 | 33"-35" | 43"-45" |
Bottoms Size Chart (cm)
|
BOTTOMS SIZE IN CM |
|||
| SIZE | US / CAN | WAIST | HIPS |
| XS | 0 | 60.9-63.5 | 86.3-88.9 |
| S | 2-4 | 66-68.5 | 91.4-93.9 |
| M | 6-8 | 71.1-73.6 | 96.4-93.9 |
| L | 10-12 | 76.2-81.2 | 101.6-106.6 |
| XL | 14 | 83.8-88.9 | 109.2-114.3 |
Denim Size Chart
Denim Size Chart (Inch)
|
DENIM SIZE IN INCHES |
||||
| WAIST SIZE | JUNIOR SIZING | WAIST | LOW WAIST | HIPS |
| 24 | 0 | 24"-25" | 26"-27" | 32"-33" |
| 25 | 1 | 25"-26" | 28"-29" | 33"-34" |
| 26 | 3 | 26"-27" | 30"-31" | 34"-35" |
| 27 | 5 | 27"-28" | 31"-32" | 35"-36" |
| 28 | 7 | 28"-29" | 32"-33" | 36"-37" |
| 29 | 9 | 29"-30" | 33"-34" | 37"-38" |
| 30 | 11 | 30"-31" | 34"-35" | 38"-39" |
| 31 | 13 | 31"-3" | 35"-36" | 39"-40" |
| 32 | 15 | 32"-33" | 36"-37" | 40"-41" |
Denim Size Chart (cm)
|
DENIM SIZE IN CM |
||||
| WAIST SIZE | JUNIOR SIZING | WAIST | LOW WAIST | HIPS |
| 24 | 0 | 60.9-63.5 | 66-68.5 | 81.2-83.8 |
| 25 | 1 | 63.5-66 | 71.1-73.6 | 83.8-86.3 |
| 26 | 3 | 66-68.5 | 76.2-78.7 | 86.3-88.9 |
| 27 | 5 | 68.5-71.1 | 78.7-81.2 | 88.9-91.4 |
| 28 | 7 | 71.1-73.6 | 81.2-83.8 | 91.4-93.9 |
| 29 | 9 | 73.6-76.2 | 83.8-86.3 | 93.9-96.5 |
| 30 | 11 | 76.2-78.7 | 86.3-88.9 | 96.5-99 |
| 31 | 13 | 78.7-81.2 | 88.9-91.4 | 99-101.6 |
| 32 | 15 | 81.2-83.8 | 91.4-93.9 | 101.6-104.1 |
Swimwear Size Chart
Swimwear Size Chart (Inch)
|
SWIMWEAR SIZE IN INCHES |
||||
| SIZE | US / CAN | BUST | WAIST | HIPS |
| XS | 0 | 31"-32" | 24"-25" | 33"-34" |
| S | 2 | 33"-34" | 26"-27" | 35"-37" |
| M | 4 | 35"-36" | 28"-29" | 37"-38" |
| L | 6 | 37"-39" | 30"-32" | 39"-41" |
| XL | 8 | 40"-42" | 33"-35" | 42"-44" |
Swimwear Size Chart (cm)
|
SWIMWEAR SIZE IN CM |
||||
| SIZE | US / CAN | BUST | WAIST | HIPS |
| XS | 0 | 78.7-81.2 | 60.9-63.5 | 83.8-86.3 |
| S | 2 | 83.8-86.3 | 66-68.5 | 88.9-93.9 |
| M | 4 | 88.9-91.4 | 71.1-73.6 | 93.9-96.5 |
| L | 6 | 93.9-99 | 76.2-81.2 | 99-104.1 |
| XL | 8 | 101.6-106.6 | 81.2-88.9 | 106.6-111.7 |
Shoes Size Chart
| US | EURO | UK | AUS | JAPAN | CHINA |
| 5 | 35-36 | 3 | 3.5 | 21.5 | 35 |
| 5.5 | 36 | 3.5 | 4 | 22 | 35.5 |
| 6 | 36-37 | 4 | 4.5 | 22.5 | 36 |
| 6.5 | 37 | 4.5 | 5 | 23 | 36.5 |
| 7 | 37-38 | 5 | 5.5 | 23.5 | 37 |
| 7.5 | 38 | 5.5 | 6 | 24 | 37.5 |
| 8 | 38-39 | 6 | 6.5 | 24.5 | 38 |
| 8.5 | 39 | 6.5 | 7 | 25 | 38.5 |
| 9 | 39-40 | 7 | 7.5 | 25.5 | 39 |
| 9.5 | 40 | 7.5 | 8 | 26 | 39.5 |
| 10 | 40-41 | 8 | 8.5 | 26.5 | 40 |
| 11 | 41-42 | 9 | 9.5 | 27.5 | 41 |
Attention: This guide provides general sizing information only, and fit can vary depending on style and brand. For more specific sizing information on the product, please refer to product description.
NOTE:
- All models are wearing size small in tops and dresses, and size 1, 3, or 5 in jeans depending on their body type.
- Most kalles jeans & dresses have some stretch, please refer to product description for fabric details.
- Most kalles bottoms have an inseam of 31-34” depending on the cut and style. Sizing may vary depending on cut and style.
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