Italian customers purchased some Integrated circuit,DC DC Converter and diode parts from us. After the shipment on April 11, the customer received the components on April 13
Part Number：LMZ14202HTZ/NOPB
Manufacturer：Texas Instruments
Description ：Non-Isolated PoL Module DC DC Converter 1 Output 5 ~ 30V 2A 6V - 42V Input
Category：Power Supplies - Board Mount - DC DC Converters
Applications：
• Intermediate Bus Conversions to 12-V and 24-V Rail
• Time-Critical Projects
• Space Constrained / High Thermal Requirement Applications
• Negative Output Voltage Applications
Typical Application (continued) :
1. Select minimum operating VIN with enable divider resistors.
2. Program VO with divider resistor selection.
3. Program turnon time with soft-start capacitor selection.
4. Select CO.
5. Select CIN.
6. Set operating frequency with RON.
7. Determine module dissipation.
8. Lay out PCB for required thermal performance
The LMZ14202H SIMPLE SWITCHER® power module is an easy-to-use step-down DC-DC solution capable of driving up to 2-A load with exceptional power conversion efficiency, line and load regulation,and output accuracy. The LMZ14202H is available in an innovative package that enhances thermal performance and allows for hand or machine soldering.
The LMZ14202H can accept an input voltage rail between 6 V and 42 V and deliver an adjustable and highly accurate output voltage as low as 5 V. The LMZ14202H only requires three external resistors and four external capacitors to complete the power solution. The LMZ14202H is a reliable and robust design with the following protection features: thermal shutdown, input undervoltage lockout, output overvoltage protection, short-circuit protection, output current limit, and allows start-up into a prebiased output. A single resistor adjusts the switching frequency up to 1 MHz.
Part Number：SZBZX84C15LT1G
Manufacturer：onsemi
Description ：Zener Diode 15 V 225 mW ±6% Surface Mount SOT-23-3 (TO-236)
Category：Discrete Semiconductor Products - Diodes - Zener - Single Zener Diodes
This Zener diodes is offered in the convenient, surface mount plastic SOT−23 package. These devices are designed to provide voltage regulation with minimum space requirement. They are well suited for applications such as cellular phones, hand held portables, and high density PC boards.
Part Number：MCP6L02T-E/MS
Manufacturer：Microchip Technology
Description ：General Purpose Amplifier 2 Circuit Rail-to-Rail 8-MSOP
Category：Integrated Circuits (ICs) - Linear - Amplifiers- Instrumentation, OP Amps, Buffer Amps
Features :
• Available in SC70 and SOT-23 Packages
• Gain Bandwidth Product: 1 MHz (typical)
• Rail-to-Rail Input/Output
• Supply Voltage: 1.8V to 6.0V
• Supply Current: IQ = 85 µA/Amplifier (typical)
• Extended Temperature Range: -40°C to +125°C
• Available in Single, Dual and Quad Packages
Typical Applications :
• Portable Equipment
• Photodiode Amplifier
• Analog Filters
• Notebooks and PDAs
• Battery-Powered Systems
The Microchip Technology Inc. MCP6L01/1R/1U/2/4 family of operational amplifiers (op amps) supports general purpose applications. The combination of railto-rail input and output, low quiescent current and bandwidth fit into many applications.
This family has a 1 MHz Gain Bandwidth Product (GBWP) and a low 85 µA per amplifier quiescent current. These op amps operate on supply voltages between 1.8V and 6.0V, with rail-to-rail input and output swing. They are available in the extended temperature range.
The MCP6L01/1R/1U/2/4 family of op amps is manufactured using Microchip’s state-of-the-art CMOS process. It is designed for low-cost, low-power and general purpose applications. The low supply voltage, low quiescent current and wide bandwidth makes the MCP6L01/1R/1U/2/4 ideal for battery-powered applications. This device has high phase margin, which makes it stable for larger capacitive load applications
Part Number：ADS124S08IPBSR
Manufacturer：Texas Instruments
Description ：24 Bit Analog to Digital Converter 12 Input 1 Sigma-Delta 32-TQFP (5x5)
Category：Integrated Circuits (ICs) - Data Acquisition - Analog to Digital Converters (ADC)
Applications :
• Sensor Transducers and Transmitters: Temperature, Pressure, Strain, Flow
• PLC and DCS Analog Input Modules
• Temperature Controllers
• Climate Chambers, Industrial Ovens
The ADS124S08 is precision, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs) that offer low power consumption and many integrated features to reduce system cost and component count in applications measuring smallsignal sensors.
These ADCs feature configurable digital filters that offer low-latency conversion results and 50-Hz or 60-Hz rejection for noisy industrial environments. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify lowlevel signals for resistive bridge or thermocouple applications. Additionally, these devices integrate a low-drift, 2.5-V reference that reduces printed circuit board (PCB) area. Finally, two programmable excitation current sources (IDACs) allow for easy and accurate RTD biasing.
An input multiplexer supports 12 inputs for the ADS124S08 and six inputs for the ADS124S06 that can be connected to the ADC in any combination for design flexibility. In addition, these devices include features such as sensor burn-out detection, voltage bias for thermocouples, system monitoring, and four general-purpose I/Os.
Part Number：TPS2055ADR
Manufacturer：Texas Instruments
Description ：Power Switch/Driver 1:1 N-Channel 250mA 8-SOIC
Category：Integrated Circuits (ICs) - Power Management (PMIC) - Power Distribution Switches, Load Drivers
The TPS2045A through TPS2048A and TPS2055A through TPS2058A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered.
These devices incorporate 80-mΩ N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, these devices limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low.
When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. These power-distribution switches are designed to current limit at 0.5 A.
Part Number：OPA2340EA/2K5
Manufacturer：Texas Instruments
Description ：CMOS Amplifier 2 Circuit Rail-to-Rail 8-VSSOP
Category：Integrated Circuits (ICs) - Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Features :
• Rail-to-Rail Input
• Rail-to-Rail Output (Within 1 mV)
• MicroSize Packages
• Wide Bandwidth: 5.5 MHz
• High Slew Rate: 6 V/μs
• Low THD + Noise: 0.0007% (f = 1 kHz)
• Low Quiescent Current: 750 μA/Channel
• Single, Dual, and Quad Versions
Applications :
• Driving A/D Converters
• PCMCIA Cards
• Data Acquisition
• Process Control
• Audio Processing
• Communications
• Active Filters
• Test Equipment
The OPA340 series rail-to-rail CMOS operational amplifiers are optimized for low-voltage, single-supply operation. Rail-to-rail input and output and high- speed operation make them ideal for driving sampling analog-to-digital (A/D) converters. They are also well- suited for general purpose and audio applications as well as providing I/V conversion at the output of digital-to-analog (D/A) converters. Single, dual, and quad versions have identical specifications for design flexibility.
The OPA340 series operate on a single supply as low as 2.5 V with an input common-mode voltage range that extends 500 mV below ground and 500 mV above the positive supply. Output voltage swing is to within 1 mV of the supply rails with a 100-kΩ load.
These devices offer excellent dynamic response (BW = 5.5 MHz, SR = 6 V/μs), yet quiescent current is only 750 A. Dual and quad designs feature completely independent circuitry for lowest crosstalk and freedom from interaction.
The single (OPA340) packages are the tiny 5-pin SOT-23 surface mount, 8-pin SOIC surface mount, and 8-pin DIP. The dual (OPA2340) comes in the miniature 8-pin VSSOP surface mount, 8-pin SOIC surface mount, and 8-pin PDIP packages. The quad (OPA4340) packages are the space-saving 16-pin SSOP surface mount and 14-pin SOIC surface mount. All are specified from –40°C to 85°C and operate from –55°C to 125°C. A SPICE macromodel is available for design analysis
The input common-mode voltage range of the OPA340 series extends 500 mV beyond the supply rails. This extended range is achieved with a complementary input stage—an N-channel input differential pair in parallel with a P-channel differential pair. The N-channel pair is active for input voltages close to the positive rail, typically (V+) – 1.3 V to 500 mV above the positive supply, while the P-channel pair is on for inputs from 500 mV below the negative supply to approximately (V+) – 1.3 V. There is a small transition region, typically (V+) – 1.5 V to (V+) – 1.1 V, in which both pairs are on. This 400-mV transition region can vary ±300 mV with process variation.
Thus, the transition region (both stages on) can range from (V+) – 1.8 V to (V+) – 1.4 V on the low end, up to (V+) – 1.2 V to (V+) – 0.8 V on the high end.
OPA340 series operational amplifiers are laser-trimmed to the reduce offset voltage difference between the N-channel and P-channel input stages, resulting in improved common-mode rejection and a smooth transition between the N-channel pair and the P-channel pair. However, within the 400-mV transition region PSRR, CMRR, offset voltage, offset drift, and THD may be degraded compared to operation outside this region.
A double-folded cascode adds the signal from the two input pairs and presents a differential signal to the class AB output stage. Normally, input bias current is approximately 200 fA; however, input voltages exceeding the power supplies by more than 500 mV can cause excessive current to flow in or out of the input pins. Momentary voltages greater than 500 mV beyond the power supply can be tolerated if the current on the input pins is limited to 10 mA. This current limiting is easily accomplished with an input resistor, as shown in Figure 24. Many input signals are inherently current-limited to less than 10 mA; therefore, a limiting resistor is not required.
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