INTRODUCTION
The 2R, 3R, 4R Resistor Networks are the designers first choice for ultra high precision, stable and reliable Voltage Divider or Network.
The Z-Foil Technology provides a significant reduction of the resistive components sensitivity to ambient temperature variations (TCR) and applied power changes, self-heating (PCR). 0.05 ppm/°C Absolute TCR removes errors due to temperature gradients.
The 2R, 3R, 4R provide a unique, inherent combination of performance characteristics resulting in excellent performance and high reliability, satisfying the needs of today’s expanding requirements.
The availability of low absolute TCR and low PCR, provides a good cost solution for the variability of other components when compiling the total error budget.
Our Application Engineering Department is available to advise and to make recommendations for non-standard technical requirements and special applications, please do not hesitate to contact us.

FEATURES
*Resistance Range each resistor: 1Ω to 150KΩ (Any ohmic value ratio is available within
resistance range)
*Non Inductive/Capacitive design
*Low Temperature Coefficient of Resistance (TCR) Absolute:
-± 0.05 ppm/°C (Industrial range)
-± 0.2 ppm/°C (MIL range), Tracking 0.1 ppm/°C
*Power Coefficient “ΔR due to self heating”: 5 ppm at rated power
*Tolerance: Absolute and Resistance Match to 0.005%
*Resistance Ratio Stability: at 0.05W @ + 25°C to 0.001%
*Electrostatic Discharge (ESD) above 25 000 Volts
*Short time overload ≤ 0.002%
*Power Rating at + 125°C: 0.3W
*Thermal EMF: 0.05μV/°C
*Non hot spot design
*Current Noise: < - 40dB
*Rise time: 1ns without ringing
*Non Inductive: < 0.08μH
*Voltage Coefficient < 0.1 ppm/V
*For better performances please contact us
*Terminal Finishes available: Lead (Pb)-free, Tin/Lead Alloy

APPLICATIONS
*Instrumentation Amplifiers
*Bridge Networks
*Differential Amplifiers
*Military, Airborne and Space
*EB Applications
*Down-Hole (high temperature)
*Medical
*Automatic Test Equipment (ATE)

300191Z, 300192Z, 300193Z

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GENERAL DESCRIPTION
The CM6802 is a green PFC/PWM. It is the new generation of ML4802, ML4841, ML4801 and ML4824-2. Its system clock frequency is generated by the external RT and CT, and then its PWM frequency is 50% of the clock and its PFC frequency is 25% of the clock. CM6802 is designed to be pin-pin compatible with CM6800 family, ML4800 family and ML4824 family. Its PWM (DC to DC section) can be easily configured to Voltage Mode or Current Mode. The green mode function can easily be designed so during the no load condition, its input power can be less than 0.75Watt without shutting off PFC. Its PFC green mode threshold and the PWM green mode threshold can separately set by selecting the proper the RC filter at ISENSE pin (pin3) and CT on RAMP 1 pin (pin 7). Power Factor Correction (PFC) allows the use of smaller, lower cost bulk capacitors, reduces power line loading and stress on the switching FETs, and results in a power supply that fully compiles with IEC-1000-3-2 specifications. Intended as a BiCMOS version of the industry-standard CM6800, CM6802 includes circuits for the implementation of leading edge, average current, “boost” type power factor correction and a trailing edge, pulse width modulator (PWM). Both PFC and PWM Gate-driver with 0.5A capabilities minimizes the need for external driver circuits. Low power requirements improve
efficiency and reduce component costs.
An over-voltage comparator shuts down the PFC section in the event of a sudden decrease in load. The PFC section also includes peak current limiting and input voltage brownout protection. The PWM section can be operated in current or voltage mode, at up to 250kHz, and includes an accurate 50% duty cycle limit to prevent  ransformer saturation.
When RAMP1 is 280KHz, fpfc is 70KHz and fpwm is 140KHz.

FEATURES
*Patent Number #5,565,761, #5,747,977, #5,742,151, #5,804,950, #5,798,635
*fosc=2 x fpwm =4 x fpfc
*No bleed resistor required
*Before the chip wakes up, IAC can start up VCC
*Pin to pin Compatible with CM6800, ML4824 and ML4800 (It needs to modify the values of the external component to work properly).
*User Program PFC automatic green mode threshold (patented)
*User Program PWM automatic green mode threshold (patented)
*Input power less than 0.75Watt without shutting off PFC at no load condition.
*Additional folded-back current limit for PWM section.
*23V Bi-CMOS process
*PWM pulse keeping for the green mode
*VIN OK guaranteed turn on PWM at 2.5V instead of 1.5V
*Internally synchronized leading edge PFC and trailing edge PWM in one IC
*Slew rate enhanced transconductance error amplifier for ultra-fast PFC response
*Low start-up current (30μA typ.)
*Low operating current (3.0mA type.)
*Low total harmonic distortion, high PF
*Reduces ripple current in the storage capacitor between the PFC and PWM sections
*Average current, continuous or discontinuous boost leading edge PFC
*VCC OVP Comparator will turn off both PFC and PWM
*Low Power Detect Comparator
*Tri-Fault detect to meet UL1950
*PWM configurable for current mode or voltage mode operation
*Current fed gain modulator for improved noise immunity
*Brown-out control, over-voltage protection, UVLO, and soft start, and Reference OK

APPLICATIONS
*Desktop PC Power Supply
*Internet Server Power Supply
*IPC Power Supply
*UPS
*Battery Charger
*DC Motor Power Supply
*Monitor Power Supply
*Telecom System Power Supply
*Distributed Power

CM6802IP, CM6802IS

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General description
The 74AUP1Z04 is a high-performance, low-power, low-voltage, Si-gate CMOS device,
superior to most advanced CMOS compatible TTL families.
The 74AUP1Z04 combines the functions of the 74AUP1GU04 and 74AUP1G04 with
enable circuitry and an internal bias resistor to provide a device optimized for use in
crystal oscillator applications.
This device ensures a very low static and dynamic power consumption across the entire
VCC range from 0.8 V to 3.6 V.
This device is fully specified for partial power-down applications using IOFF at output Y.
The IOFF circuitry disables the output Y, preventing the damaging backflow current through
the device when it is powered down.
When not in use the EN input can be driven HIGH, pulling up the X1 input and putting the
device in a low power disable mode. Schmitt-trigger action at the EN input makes the
circuit tolerant to slower input rise and fall times across the entire VCC range from 0.8 V to
3.6 V.
The integration of the two devices into the 74AUP1Z04 produces the benefits of a
compact footprint, lower power dissipation and stable operation over a wide range of
frequency and temperature.

Features
* Wide supply voltage range from 0.8 V to 3.6 V
* High noise immunity
* ESD protection:
* HBM JESD22-A114D Class 3A exceeds 5000 V
* MM JESD22-A115-A exceeds 200 V
* CDM JESD22-C101C exceeds 1000 V
* Low static power consumption; ICC = 0.9 mA (maximum)
* Latch-up performance exceeds 100 mA per JESD 78 Class II
* Inputs accept voltages up to 3.6 V
* Low noise overshoot and undershoot < 10 % of VCC
* IOFF circuitry provides partial Power-down mode operation at output Y
* Multiple package options
* Specified from -40 °C to +85 °C and -40 °C to +125 °C

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The SMRC1D is a truly precision molded surface mountable resistor. It utilizes the Bulk Metal® Foil technology for the resistive element with its inherent low TCR and long term stability. This surface mountable product affords similar performance to the time tested VSR molded through hole product.
Voltage division with tight tracking < 5ppm/°C can be achieved with 2 randomly selected units even with a large ratio between the two values.
The molded SMRC1D, while slightly larger and heavier than the Bulk Metal® Foil VSM surface mountable chip resistor, has a rugged construction capable of withstanding significant thermal
cycling and allows for board installation without concern for tolerance shifts due to manufacturing processes or mechanical stresses.

FEATURES
• Small footprint
• Temperature Coefficient of Resistance: ± 4ppm/°C (0°C to + 60°C)
• Value Range: 5Ω to 33KΩ
• Tight Tolerances available to ± 0.01 percent
• Power: 0.25 watts @ + 70°C
• Excellent Long Term Stability: better than ± 0.02% maximum
• Low Thermal EMF: 0.1mV/°C maximum
• Low Noise, High Frequency Operation
• Matched Sets Available

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Description
The Bias Resistor Transistor (BRT) contains a single transistor with a monolithic bias network consisting of two resistors; a series base resistor and a base−emitter resistor. These digital transistors are designed to replace a single device and its external resistor bias network. The BRT eliminates these individual components by integrating them into a single device. In the UMC2NT1 series, two complementary BRT devices are housed in the SOT−353 package
which is ideal for low power surface mount applications where board space is at a premium.

Features
• Pb−Free Packages are Available
• Simplifies Circuit Design
• Reduces Board Space
• Reduces Component Count
• Available in 8 mm, 7 inch/3000 Unit Tape and Reel

UMC2NT1, UMC2NT1G, UMC3NT1, UMC3NT1G, UMC3NT2, UMC5NT1, UMC5NT2, UMC5NT2G

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