|Description||Low Voltage Audio Power Amplifier|
|Datasheet||Download D386 datasheet
The is a power amplifier designed for use in low voltage consumer applications. The gain is internally set 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from to 200. The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24milliwatts when operating from a 6 volt supply, making the LM386 ideal for battery operation.
Battery operation Minimu m ex tern al parts Wide supply voltage range: 4V12V Low quiescent current drain: 4mA Voltage gains from to 200 Available in 8 pin DIP package
APPLICATION AM-FM rad io amp lifiers Portable tape player amplifiers Intercoms TV sound systems Line drivers Ultrasonic drivers Small servo drivers Power convertersSHAOXING SILICORE TECHNOLOGY CO.,LTD www. Silicore. com. cn
Characteristic Maximum Input Vo ltage Supply Vo ltage Maximum Power Disspation Soldering temp erature(10 sec.) Junction Temperature Operating Temperature Storage Temp erature Symbol VIN Vcc TS Tj Tamb Tstg Value Unit mV °C
Operating Supply Voltage Quiescent Current Output Power Voltage Gain Bandwidth Total Harmonic Distortion Power Supply Rejection Ratio Input Resistance Input Bias Current
To make the mo re versatile amplifier, two pins (1and 8) are provided for gain control. With pins 1 and 8 open the 1.35 kW resistor sets the gain 20 (26 dB). If a capacitoris put from pin to 8, bypassing the 1.35 kW resistor, the gain will 200 (46 dB). If a resistor is placed in series with the capacitor, the gain can be set to any value from to 200. Gain control can also be done by capacitively coupling a resistor (or FET) from pin 1 to ground. Additional external components can be placed in parallel with the internal feedback resistors to tailor the gain and frequency response for individual applications. For example, we can compensate poor speaker bass response by frequency shaping the feedback path. This is done with a series RC from pin to 5 (paralleling the internal 15 kW resistor). For 6 dB effective bass boost: R. 15 kW, the lowest value for good stable operation kW if pin 8 is open. If pins 1 and 8 are bypassed then R as low 2 kW can be used. This restriction is because the amplifier is only compensated for closed-loop gains greater than 9.
INPUT BIASING The schematic shows that both inputs are biased to ground with 50 kW resistor. The base current of the input transistors is about 250 nA, so the inputs are at about 12.5 mV when left open. If the dc source resistance driving the D386 is higher than kW it will contribute very little additional offset (about mV at the input, mV at the output). If the dc source resistance is less than 10 kW, then shorting the unused input to ground will keep the offset low (about mV at the input, mV at the output). For dc source resistances between these values we can eliminate excess offset by putting a resistor from the unused input to ground, equal in value to the dc source resistance. Of course all offset problems are eliminated if the input is capacitively coupled. When using the D386 with higher gains (byp assing the 1.35 kW resistor between pins 1 and it is necessary to bypass the unused input, preventing degradation of gain and possible instabilities. This is done with 0.1 µF capacitor or a short to ground depending on the dc source resistance on the driven input.
|Some Part number from the same manufacture ETC|
|GM1WA80350A High-luminosity LED LAMP|
|2143-2 Double Miniature Banana Jack|
|SJA145C Crystal Clock Oscillators|
|PLC-RSC-120UC/21-21 PLC Relay, Consisting of base Terminal Block Plcbsc|
|TZP8053 Pigtailed PD for Analog Application|
|RL0503-11.49K-103-MS Epoxy Coated Thermistor|
|SVC470D-05B Ceramic Surge Absorbers (varistors)|
|HB12173 Breake Away Header .025(0.64mm) Square Posts|
|ABL-19.6608MHZ-B2 AB Series Hc49u Crystals, ABLS Series Hc49us SMD Crystals, ABL Series Hc49us Crystals, ABM3 Series 5.0 x 3.2 SMD Crystals|
|KPD1203K Unbiased for low Frequency or Biased for high Frequency Measurement|
|TBT4NN6 Pigtailed PD for Analog Application|
|CGS442U035R2C Computer Grade Aluminum Electrolytic Capacitor|
|CB3-5I-M 7x5mm Low Cost Clock Oscillator|
|18CV8 CMOS Programmable Electrically Erasable Logic Device|
|AO4419 P-channel Enhancement Mode Field Effect Transistor|
|LT315 Photo Dmos-fet Relay|
|C118120006 Timers Symmetrical Recycler|
|CDV303K300J03 Mica Capacitors, Standard Dipped|
|AA10B-012L-033S 10 Watts(new 3.3V Output)|
|M20U6831 Multilayer Ceramic Capacitors|
HC38R2E153K : Medium/high Voltage Multilayer Ceramic Capacitors
EGC05DRAF : .100 [2.54mm] Contact Centers, 431 Insulator Height
OR2T40A-7T304I : Field-programmable Gate Arrays
BUS-61570-280L : Mil-std-1553b Notice 2 Advanced Integrated MUX Hybrids WITH Enhanced RT Features (aim-hyer)
RN1632CBVC : Thin Film Chip Resistor Networks
MOR1W2G082JB10 : Metal Oxide Film Fixed Resistors
AS2431DCBDN : Precision Adjustable Shunt Reference
NMF4812DC : Isolated 1W Regulated Single Output Dc/dc Converters
OR2T06A-4BA240 : Field-programmable Gate Arrays
JQC-3FF-09-1HS : Small-scaly Power hit the Electromagnetic Relay
OR2C26A-4S352 : Field-programmable Gate Arrays
KF2002-GF94A : Printheads. Compact low voltage thick film thermal printhead (8dots / mm) KF2002-GF94A of low voltage thermal printheads have a 1.25-mm pitch connectors and reduced power supply circuit voltage requirements. This makes them useful for a wide range of applications, including CAT, FET-POS and naturally, handheld devices that demand printer heads which can operate.
LF201D : Ultra-miniature, 2W Dual Output SMT Dc/dc Converters. s typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. s subject to change without notice. 2W Output Power Ultra-Miniature SMT Case 1,000 VDC Isolation & 24V Inputs to +85ºC Operation 7 Standard Models 2.0 MH MTBF Minimum Industry Standard Pin-Out Parameter Input Voltage Range Reverse Polarity Input Current Input Filter.
E3X-NM : Fiber-optic Accessories. Various Accessories Expand the Usefulness of the Fiber-Optic Cables Lenses extend sensing distances Side-view attachments provide space savings Flexible stainless steel tubes protect plastic fibers from mechanical damage Thin fiber adapters as replacement Splices for 2.2 mm fiber can be used to repair cut fiber Focusing lens pair (use with E32-TC200C,.
SLPX561M250A4P3 : 560µF Aluminum Capacitor Radial, Can - Snap-In 250V; CAP ALUM 560UF 250V 20% SNAP. s: Capacitance: 560µF ; ESR (Equivalent Series Resistance): 355.0 mOhm ; : General Purpose ; Lifetime @ Temp.: 3000 Hrs @ 85°C ; Size / Dimension: 0.866" Dia (22.00mm) ; Lead Spacing: 0.394" (10.00mm) ; Surface Mount Land Size: - ; Mounting Type: Through Hole ; Package.
CCK40-MM-160-36 : RF Cable Assemblies 2.9mm(K)/2.9mm(K) Low Loss 40GHz S/S. The Crystek 160 Series 40GHz RF Cable Assemblies are low loss coax cable assemblies with 2.92mm(K) stainless steel connectors . The 160 Series heavy duty adhesive strain relief, a center conductor of silver-plated solid copper, and a 50Ω impedance. The Crystek 160 Series 40GHz RF Cable Assemblies.
AQ137M820JA1BE : 82pF Ceramic Capacitor 1111 (2828 Metric) 500V; CAP CER 82PF 500V 5% 1111. s: Capacitance: 82pF ; Voltage - Rated: 500V ; Tolerance: ±5% ; Package / Case: 1111 (2828 Metric) ; Temperature Coefficient: M ; Packaging: Bulk ; : High Q, Low Loss ; Lead Spacing: - ; Operating Temperature: -55°C ~ 175°C ; Mounting Type: Surface Mount, MLCC ; Lead Free Status:.
SPC20982 : Bobbins Transformer. s: Primary Voltages: 1 x 117V ; Secondary Voltages: 1 x 12V ; Current Rating: 4A ; Power Rating: - ; Plug Type: - ; MSL: -.
HM2P65PK5110GF : Gold Through Hole Backplane - Hard Metric, Standard Connectors, Interconnect Header, Male Pins; CONN HEADER 125POS TYPE AB VERT. s: Connector Style: AB 25 ; Connector Type: Header, Male Pins ; Connector Usage: CompactPCI ; Contact Finish: Gold ; Contact Finish Thickness: 30µin (0.76µm) ; Mounting Type: Through Hole ; Number of Positions Loaded: All ; Number.
D38999/20KH53SNLC : Stainless Steel Panel Mount, Flange Circular - Housing Connectors, Interconnect Receptacle for Female Contacts; CONN HSG RCPT 53POS WALL MT SCKT. s: : Shielded ; Packaging: Bulk ; Connector Type: Receptacle for Female Contacts ; Mounting Type: Panel Mount, Flange ; Shell Size - Insert: 23-53 ; Contact Type: Crimp ; Fastening Type: Threaded ; Contact.
ELJ-QF24NJF : Fixed Inductors, Coils, Choke 24nH 200mA 0402 (1005 Metric) Non-Magnetic Core; INDUCTOR 24NH 5% 0402 SMD. s: Inductance: 24nH ; Tolerance: ±5% ; Package / Case: 0402 (1005 Metric) ; Packaging: Tape & Reel (TR) ; Type: Non-Magnetic Core ; Current: 200mA ; Mounting Type: Surface Mount ; Q @ Freq: 36 @ 800MHz ; Frequency - Self Resonant: 1.9GHz ; DC Resistance.
CWN-350-14-0021 : Gold Through Hole Rectangular - Headers, Male Pin Connectors, Interconnect Header, Shrouded; CONN STRAIGHT LEAD 14 PIN. s: Color: Blue ; Connector Type: Header, Shrouded ; Contact Finish: Gold ; Contact Mating Length: 0.240" (6.10mm) ; : Polarizing Key ; Mounting Type: Through Hole ; Number of Positions Loaded: All ; Number of Rows: 2 ; Pitch: 0.100".
9C12063A95R3FKHFT : 95.3 Ohm 0.25W, 1/4W Chip Resistor - Surface Mount; RES 95.3 OHM 1/4W 1% 1206 SMD. s: Resistance (Ohms): 95.3 ; Power (Watts): 0.25W, 1/4W ; Tolerance: ±1% ; Packaging: Cut Tape (CT) ; Composition: Thick Film ; Temperature Coefficient: ±100ppm/°C ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant.
ERJ-2RKF3090X : 309 Ohm 0.1W, 1/10W Chip Resistor - Surface Mount; RES 309 OHM 1/10W 1% 0402 SMD. s: Resistance (Ohms): 309 ; Power (Watts): 0.1W, 1/10W ; Tolerance: ±1% ; Packaging: Cut Tape (CT) ; Composition: Thick Film ; Temperature Coefficient: ±100ppm/°C ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant.
05085C : CAPACITOR, CERAMIC, MULTILAYER, 50 V, SURFACE MOUNT, 0508. s: Configuration / Form Factor: Chip Capacitor ; Technology: Multilayer ; Applications: General Purpose ; Electrostatic Capacitors: Ceramic Composition ; Mounting Style: Surface Mount Technology ; Operating Temperature: -55 to 125 C (-67 to 257 F).
ADG714BRU-REEL : OCTAL 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO24. s: Supply Voltage (VS): -2.5 to 2.75 volts ; Ron: 4.5 ohms ; tON: 32 ns ; tOFF: 18 ns ; Operating Temperature: -40 to 85 C (-40 to 185 F) ; Logic Family: CMOS ; Package Type: TSSOP, MO-153AD, TSSOP-24 ; Number of Pins: 24 ; Number of Devices: 8.
NB3W1200LMNG : Clock Buffer 3.3V 100/133MHz Diff 1:12 Push-Pull Clck. ON Semiconductor NB3W Push-Pull Clock ZDB/Fanout Buffers buffers are designed to work in conjunction with a PCIe compliant source clock synthesizer to provide point-to-point clocks to multiple agents. They are capable of distributing the reference clocks for Intel QuickPath Interconnect (Intel QPI),.