DESCRIPTION
The WM8720 is a high performance stereo DAC designed for audio applications such as CD, DVD, home theatre systems, set top boxes and digital TV. The WM8720 supports data input word lengths from 16 to 24-bits and sampling rates up to 96kHz. The WM8720 consists of a serial interface port, digital interpolation filter, multi-bit sigma delta modulator and stereo DAC in a small 20-pin SSOP package. The WM8720 also includes a digitally controllable mute and attenuator function on each channel.
The WM8720 supports a variety of connection schemes for audio DAC control. The SPI-compatible serial control port provides access to a wide range of features including onchip mute, attenuation and phase reversal. A hardware controllable interface is also available.
The programmable data input port supports a variety of glueless interfaces to popular DSPs, audio decoders and S/PDIF and AES/EBU receivers.

FEATURES
*Performance
- 102dB SNR (‘A’ weighted @48kHz),
- THD: -95dB @ 0dB FS
*5V or 3.3V supply operation
*Sampling frequency: 8kHz to 96kHz
*Input data word: 16 to 24-bit
*Hardware or SPI compatible serial port control modes
- Hardware mode: system clock, reset, mute, de-emphasis
- Serial control mode: mute, de-emphasis, digital attenuation (256 steps), zero mute, phase reversal, power down

APPLICATIONS
*CD, DVD audio
*Home theatre systems
*Set top boxes
*Digital TV

WM8720EDS, WM8720EDS/R, WM8720SEDS, WM8720SEDS/R

DESCRIPTION
NEC's UPG2015TB is a single control single control GaAs MMIC L, S-band SPDT (Single Pole Double Throw) switch for mobile phone and L, S-band applications.
This device can operate frequency from 0.5 to 2.5 GHz, with low insertion loss and high isolation.
This device is housed in a 6-pin super minimold package, suitable for high-density surface mounting.

FEATURES
*SUPPLY VOLTAGE:
-VDD = 2.7 to 3.0 V (2.8 V TYP.)
*SINGLE SWITCH CONTROL VOLTAGE:
-Vcont (H) = 2.7 to 3.0 V (2.8 V TYP.)
-Vcont (L) = −0.2 to +0.2 V (0 V TYP.)
*LOW INSERTION LOSS:
-LINS1 = 0.25 dB TYP. @ f = 0.5 to 1.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
-LINS2 = 0.30 dB TYP. @ f = 1.0 to 2.0 GHz,VDD = 2.8 V, Vcont = 2.8 V/0 V
-LINS3 = 0.35 dB TYP. @ f = 2.5 GHz,VDD = 2.8 V, Vcont = 2.8 V/0 V
*HIGH ISOLATION:
-ISL1 = 27 dB TYP. @ f = 0.5 to 2.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
-ISL2 = 24 dB TYP. @ f =2.5 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
*POWER HANDLING:
-Pin (0.1 dB) = +27.0 dBm TYP. @ f = 2.5 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
*HIGH-DENSITY SURFACE MOUNTING:
-6-pin super minimold package (2.0 × 1.25 × 0.9 mm)

APPLICATIONS
*L, S-band digital cellular or cordless handsets
*PCS, W-LAN, WLL and BluetoothTM
*Short Range Wireless

UPG2015TB-E3-A

Description
The ZXLD1322 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series up to a total of 700mA output current.
Applications cover input voltages ranging from 2.5V to 15V. Depending upon supply voltage and external components, this can provide up to 12W of output power.
The device employs a variable 'on' and 'off' time control scheme with adjustable peak switch current limiting and operates in Buck/Boost mode, offering higher power efficiency and lower system cost than conventional PFM buck/boost circuitry.
The device includes the DC-DC converter, a high-side current monitor and an NPN switching transistor to provide an integrated solution offering small PCB size, competitive cost/performance, high power efficiency of DC-DC conversion and maximum LED brightness/reliability. More importantly, it retains design flexibility to add customer specific features.
The feedback control circuitry inside the ZXLD1322 provides excellent load and current regulation, resulting in very stable LED current over the useful life of the battery and over the full operating temperature range.
The LED current can be adjusted from 100% down to 10% of the set value by applying a dc voltage to the ADJ pin and down to 1% by applying a PWM signal. An on-chip LED protection circuit also allows output current to be reduced linearly above a predetermined threshold temperature using an external thermistor at the TADJ pin.
External resistors set nominal average LED current and coil peak current independently.
The device can be shut down by applying a continuous low level dc voltage to the ADJ pin.

Features
*2.5V to 15V Input Voltage Range
*Up to 700mA output current
*Typical efficiency# >80%
*User-defined thermal control of LED output current using external thermistor
*High output current stability over input voltage and temperature
*12μA typical standby current
*LED current adjustable from 100% down to 2%
*Adjustable Soft-Start
*Capable of driving 3 LEDs in series

Applications
*High power LED flashlights
*LED back-up lighting
*General LED lighting

ZXLD1322DCTC

Description
The ISL6745A is a low-cost double-ended voltage-mode PWM controller designed for half-bridge and full-bridge power supplies and line-regulated bus converters. It provides precise control of switching frequency, adjustable soft-start, and overcurrent shutdown. In addition, the ISL6745A allows for accurate adjustment of MOSFET non-overlap time (“deadtime”) with deadtimes as low as 35ns, allowing power engineers to optimize the efficiency of open-loop bus converters. The ISL6745A also includes a control voltage input for closed-loop PWM and line voltage feed-forward functions. The ISL6745A is identical to the ISL6745, but is optimized for higher noise environments.
Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745A is available in a space-saving MSOP-10 package and is guaranteed to meet rated specifications over a wide -40°C to +105°C temperature range.

Features
*Precision Duty Cycle and Deadtime Control
*100μA Start-up Current
*Adjustable Delayed Overcurrent Shutdown and Re-Start
*Adjustable Oscillator Frequency Up to 2MHz
*1A MOSFET Gate Drivers
*Adjustable Soft-Start
*Internal Over-Temperature Protection
*35ns Control to Output Propagation Delay
*Small Size and Minimal External Component Count
*Input Undervoltage Protection
*Pb-Free (RoHS Compliant)

Applications
*Half-bridge Converters
*Full-bridge Converters
*Line-regulated Bus Converters
*AC/DC Power Supplies
*Telecom, Datacom, and File Server Power

ISL6745AAUZ

DESCRIPTION
NEC's UPG2010TB is a single control GaAs MMIC L-band SPDT (Single Pole Double Throw) switch for mobile phone and L-band applications.
This device can operate from 0.5 to 2.5 GHz, with low insertion loss and high isolation.
This device is housed in a 6-pin super minimold package, suitable for high-density surface mounting.

FEATURES
*SUPPLY VOLTAGE:
-VDD = 2.7 to 3.0 V (2.8 V TYP.)
*SWITCH CONTROL VOLTAGE:
-Vcont (H) = 2.7 to 3.0 V (2.8 V TYP.)
-Vcont (L) = −0.2 to +0.2 V (0 V TYP.)
*LOW INSERTION LOSS:
-LINS1 = 0.25 dB TYP. @ f = 0.5 to 1.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
-LINS2 = 0.30 dB TYP. @ f = 2.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
-LINS3 = 0.35 dB TYP. @ f = 2.5 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V(Reference value)
*HIGH ISOLATION:
-ISL1 = = 28 dB TYP. @ f = 0.5 to 2.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
-ISL2 = 25 dB TYP. @ f = 2.5 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V(Reference value)
*POWER HANDLING:
-Pin (0.1 dB) = +33.0 dBm TYP. @ f = 1.0 GHz, VDD = 2.8 V, Vcont = 2.8 V/0 V
*HIGH-DENSITY SURFACE MOUNTING:
-6-pin super minimold package (2.0 × 1.25 × 0.9 mm)

APPLICATIONS
*L-band digital cellular or cordless handsets
*PCS, W-LAN, WLL and BluetoothTM
*Short Range Wireless

UPG2010TB-E3-A

Description
The CA3228 is a monolithic integrated circuit designed as an automotive speed-control system.
The system monitors vehicle speed and compares it to a stored reference speed. Any deviation in vehicle speed causes a servo mechanism to open or close the engine throttle as required to eliminate the speed error. The reference speed, set by the driver, is stored in a 9-bit counter.
The reference speed can be altered by the ACCEL and COAST driver commands. The ACCEL command causes the vehicle to accelerate at a controlled rate; the COAST command disables the servo, thereby forcing the vehicle to slowdown. Application of the brake disables the servo and places the system in the standby mode while the RESUME command returns the vehicle to the last stored speed.
Vehicle speed and driver commands are inputs to the integrated circuit via external sensors. Actuators are needed to convert the output signals into the mechanical action necessary to control vehicle speed.
The CA3228 is supplied in a 24 lead dual-in-line plastic package (E suffix). Refer to AN7326 for application information.

Features
*Low Power Dissipation
*I2L Control Logic
*Power-On Reset
*On-Chip Oscillator for System Time Reference
*Single Input Line for Operator Commands
*Amplitude Encoded Control Signals
*Transient Compensated Input Commands
*Controlled Acceleration Mode
*Internal Redundant Brake and Low-Speed Disable
*Braking Disable

Applications
*Automotive Speed Control
*Residential and Industrial Heating and Cooling Controls
*Industrial AC and DC Motor Speed Control
*Applications Requiring Acceleration and Deceleration Control

CA3228E

DESCRIPTION
The CAT5128 is a single digitally programmable potentiometer (DPP™) designed as an electronic replacement for mechanical potentiometers and trim pots. Ideal for automated adjustments on high volume production lines, they are also well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment.
The CAT5128 contains a 32-tap series resistor array connected between two terminals A and B. An up/down counter and decoder that are controlled by two input pins, determines which tap is connected to the wiper, W. Wiper-control of the CAT5128 is accomplished with two input control pins, U¯¯P and ¯D¯O¯W¯¯N¯. A high-to-low transition on the U¯¯P input increments the wiper position and a high-to-low transition on the ¯D¯O¯W¯¯N¯ input decrements the wiper position. The tap position is not stored in memory. The wiper is always set to the mid point, tap 15 at power up.
The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor. DPPs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing.

FEATURES
*32-position linear taper potentiometer
*Low power CMOS technology
*Single supply operation: 2.5V – 5.5V
*Discrete step-up/step-down digital control
*Resistance values: 10kΩ, 50kΩ and 100kΩ
*Available in SOT-23 8-lead Pb-free package

APPLICATIONS
*Automated product calibration
*Remote control adjustments
*Offset, gain and zero control
*Tamper-proof calibrations
*Contrast, brightness and volume controls
*Motor controls and feedback systems
*Programmable analog functions

CAT5128TBI-10, CAT5128TBI-50, CAT5128TBI-00

GENERAL DESCRIPTION
The DS1688/DS1691 are real-time clocks (RTCs) designed as successors to the industry standard DS1285, DS1385, DS1485, and DS1585 PC real-time clocks. These devices provide the industry standard DS1285 clock function with the new feature of either +3.0V or +5.0V operation and automatic backup and write protection to an external SRAM. The DS1688 also incorporates a number of enhanced features including a silicon serial number, power-on/off control circuitry, 114 bytes of user NV SRAM, power-on elapsed timer, and power-cycle counter.

FEATURES
Incorporates Industry Standard DS1287 PC Clock Plus Enhanced Features:
*+3V or +5V Operation
*64-Bit Silicon Serial Number
*64-Bit Customer Specific ROM or Additional Serial Number Available
*Power Control Circuitry Supports System Power-On from Date/Time Alarm or Key Closure
*Automatic Battery Backup and Write Protection to External SRAM
*Crystal Select Bit Allows RTC to Operate with 6Pf or 12.5Pf Crystal
*114 Bytes User NV RAM
*Auxiliary Battery Input
*RAM Clear Input
*Century Register
*32kHz Output for Power Management
*32-Bit VCC Powered Elapsed Time Counter
*32-Bit VBAT Powered Elapsed Time Counter
*16-Bit Power-Cycle Counter
*Compatible with Existing BIOS for Original DS1287 Functions
*Available as IC (DS1688) or Stand-Alone Module with Embedded Battery and Crystal (DS1691)
*Timekeeping Algorithm Includes Leap Year Compensation Valid Up to 2100

DS1688S, DS1688S+, DS1691

DESCRIPTION
The M62500 is a semiconductor integrated circuit designed and developed as a deflection control of the CRT display monitor.
The built-in trigger mode oscillator allows stable PWM control to be gained against a wide range of change of external signals.
The M62500 provides a low supply voltage output malfunction preventive circuit (UVLO) and software start function optimum to horizontal output correction of monitor, high voltage drive and high voltage regulator.

FEATURES
*PWM output in synchronization with external signals
*Wide range of PWM control frequency
 15kHz to 150kHz
*The PWM output phase is adjustable against external signals
*Soft start
*Built-in low voltage output malfunction prevention circuit
 Start VCC>9V
 Stop VCC<6V

APPLICATION
CRT display monitor

M62500FP

DESCRIPTION
The WM8706 is a high performance stereo DAC designed for audio applications such as DVD, home theatre systems, and digital TV.
The WM8706 supports data input word lengths from 16 to 32-bits and sampling rates up to 192kHz.
The WM8706 can implement 2 channels at 192kHz for highend DVD-Audio.
The WM8706 consists of a serial interface port, digital interpolation filters, multi-bit sigma delta modulators and stereo DAC in a small 28-pin SSOP package.
The WM8706 also includes a digitally controllable mute and attenuate function on each channel.
The WM8706 supports a variety of connection schemes for audio DAC control.
The MPU serial port provides access to a wide range of features including on-chip mute, attenuation and phase reversal.
A hardware controllable interface is also available.
It is pin-compatible with the WM8716 provided the oscillator circuit on WM8716 is not required in the application.
The WM8706 is an ideal device to interface to AC-3, DTS , and MPEG audio decoders for surround sound applications, or for use in DVD players supporting DVD-A.

FEATURES
*Stereo DAC
*Audio Performance
-106dB SNR (‘A’ weighted @ 48kHz) DAC
- -97dB THD
*DAC Sampling Frequency: 8kHz – 192kHz
*3-Wire Serial Control Interface or Hardware Control
*Programmable Audio Data Interface Modes
-I2S, Left, Right Justified, DSP
-16/20/24/32 bit Word Lengths
*Independent Digital Volume Control on Each Channel with 127.5dB Range in 0.5dB Steps
*3.0V – 5.5V Supply Operation
*28-Pin SSOP Package
*Exceeds Dolby Class A Performance Requirements

APPLICATIONS
*DVD-Audio and DVD ‘Universal’ Players
*Home theatre systems
*Digital TV
*Digital broadcast receivers

XWM8706EDS