General description
The NE1617A is an accurate two-channel temperature monitor. It measures the temperature of itself and the temperature of a remote sensor. The remote sensor is a diode connected transistor. This can be in the form of either a discrete NPN/PNP, such as the 2N3904/2N3906, or a diode connected PNP built into another die, such as is done on some Intel microprocessors.
The temperature of both the remote and local sensors is stored in a register that can be read via a 2-wire SMBus. The temperatures are updated at a rate that is programmable via the SMBus (the average supply current is dependent upon the update rate—the faster the rate, the higher the current).
In addition to the normal operation, which is to update the temperature at the programmed rate, there is a one-shot mode that will force a temperature update.
There is also an alarm that senses either an overtemperature or undertemperature condition. The trip points for this alarm are also programmable.
The device can have 1 of 9 addresses (determined by 2 address pins), so there can be up to 9 of the NE1617A on the SMBus.
can also be put in standby mode (in order to save power). This can be done either with software (over the SMBus) or with hardware (using the STBY pin).

*Replacement for Maxim MAX1617 and Analog Devices ADM1021
*Monitors local and remote temperature
*Local (on-chip) sensor accuracy:
-±2 °C at 60 °C to 100 °C
-±3 °C at -40 °C to 125 °C
*Remote sensor accuracy:
-±3 °C at 60 °C to 100 °C
-±5 °C at -40 °C to 125 °C
*No calibration required
*Programmable overtemperature/undertemperature alarm
*SMBus 2-wire serial interface up to 100 kHz
*3 V to 5.5 V supply range; 5.5 V tolerant
*70 mA supply current in operating mode
*3 mA (typical) supply current in standby mode
*ESD protection exceeds 2000 V HBM per JESD22-A114, 250 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
*Latch-up testing is done to JEDEC standard JESD78, which exceeds 100 mA
*Small 16-lead SSOP (QSOP) package

*Desktop computers
*Notebook computers
*Smart battery packs
*Industrial controllers
*Telecommunications equipment


댓글을 달아 주세요 Comment

PBL 38573 is a monolithic integrated speech transmission circuit for use in electronic telephones. It is intended specially for telephone lines with constant current feed. Maximum line current less than 130 mA in DIL package (100 mA in SO package). It is designed to accomodate either a low impedance dynamic or an electret microphone. A signal summing point at the transmitter input is available for DTMF dialler- and possible monitor or handsfree signals. An available internally preset line length compensation can be adjusted or shut off in low gain mode with external resistors. Application dependent parameters such as line balance, side tone level, transmitter and receiver gains and frequency responces are set independently by external components which means an easy adaption to various market needs. The setting of the parameters if carried out in certain order will counteract the interaction between the settings. A DCsupply is provided to feed microphones and diallers.

Key features
*Minimum number of external components for function,with one filtered DC-supply. 6 capacitors and 10 resistors.
*Easy adaption to various market needs.
*Mute control input for operation with DTMF - generator.
*Transmitter and receiver gain regulation for automatic loop loss compensation. Disconnectable.
*Extended current and voltage range 5 - 130mA (DIP), down to 2 V.
*Differential microphone input for good balance to ground.
*Balanced receiver output stage.
*Stabilized DC - supply for low current CMOS diallers and electret microphones.
*Short start up time.
*Excellent RFI performance.
*In 14- pin DIP and SO packages.

PBL38573/1NS, PBL38573/1SOS

댓글을 달아 주세요 Comment

The ACS8520A is a highly integrated, single-chip solution for the Synchronous Equipment Timing Source (SETS) function in a SONET or SDH Network Element. The device generates SONET or SDH Equipment Clocks (SEC) and Frame Synchronization clocks. The ACS8520A is fully compliant with the required international specifications and standards.
The device supports Free-run, Locked and Holdover modes. It also supports all three types of reference clock source: recovered line clock, PDH network, and node synchronization. The ACS8520A generates independent SEC and BITS/SSU clocks, an 8 kHz Frame Synchronization clock and a 2 kHz Multi-Frame Synchronization clock.
Two ACS8520A devices can be used together in a Master/ Slave configuration mode allowing system protection against a single ACS8520A failure.
A microprocessor port is incorporated, providing access to the configuration and status registers for device setup and monitoring. The ACS8520A supports IEEE 1149.1[5] JTAG boundary scan.
The user can choose between OCXO or TCXO to define the Stratum and/or Holdover performance required.

* Suitable for Stratum 3, 4E, 4 and SONET Minimum Clock (SMC) or SONET/SDH Equipment Clock (SEC) applications
* Meets Telcordia 1244-CORE[19] Stratum 3 and GR-253[17], and ITU-T G.813[11] Options Ι and ΙΙ specifications
* Accepts 14 individual input reference clocks, all with robust input clock source quality monitoring.
* Simultaneously generates nine output clocks, plus two Sync pulse outputs
* Absolute Holdover accuracy better than 3 x 10-10 (manual), 7.5 x 10-14 (instantaneous); Holdover stability defined by choice of external XO
* Programmable PLL bandwidth, for wander and jitter tracking/attenuation, 0.1 Hz to 70 Hz in 10 steps
* Automatic hit-less source switchover on loss of input
* Microprocessor interface - Intel, Motorola, Serial, Multiplexed, or boot from EPROM
* Output phase adjustment in 6 ps steps up to ±200 ns
* IEEE 1149.1 JTAG Boundary Scan
* Single 3.3 V operation
* Available in LQFP 100 package
* Lead (Pb) - free version available (ACS8520AT), RoHS and WEEE compliant.


댓글을 달아 주세요 Comment

• Narrowband low power UHF wireless data transmitters
• 402 / 424 / 426 / 429 / 433 / 447 / 449 / 469 / 868 and 915 MHz ISM/SRD band systems
• TPMS – Tire Pressure Monitoring Systems
• AMR – Automatic Meter Reading
• Wireless alarm and security systems
• Home automation
• Low power telemetry

Product Description

 CC1070 is a true single-chip UHF transmitter designed for very low power and very low voltage wireless applications. The circuit is mainly intended for the ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency bands at 402, 424, 426, 429, 433, 447, 449, 469, 868 and 915 MHz, but can easily be programmed for multi-channel operation at other frequencies in the 402 - 470 and 804 - 940 MHz range.

 The CC1070 is especially suited for narrowband systems with channel spacings of 12.5 or 25 kHz complying with ARIB STD T-67 and EN 300 220. The CC1070 main operating parameters
can be programmed via a serial bus, thus making CC1070 a very flexible and easy to
use transmitter. In a typical application CC1070 will be used together with a microcontroller and a few external passive components. CC1070 is based on Chipcon’s SmartRF - 02 technology in 0.35 µm CMOS.

• True single chip UHF RF transmitter
• Frequency range 402 - 470 MHz and 804 - 940 MHz
• Programmable output power
• Low supply voltage (2.3 to 3.6 V)
• Very few external components required
• Small size (QFN 20 package)
• Pb-free package
• Data rate up to 153.6 kBaud
• OOK, FSK and GFSK data modulation
• Fully on-chip VCO
• Programmable frequency makes crystal temperature drift compensation possible without TCXO
• Suitable for frequency hopping systems
• Suited for systems targeting compliance with EN 300 220, FCC CFR47 part 15 and
• Development kit available
• Easy-to-use software for generating the CC1070 configuration data

CC1070-RTY1 CC1070-RTR1 CC1020_1070DK-433 CC1020_1070DK-868/915 CC1070SK RoHS

댓글을 달아 주세요 Comment

· Data amplifier for read speed up to twelve times nominal data speed
· Normalized and filtered error signals for servo control
· Wobble pre-processor with switchable low-pass filter
· Calculation of signals for real-time laser power control for write speed up to four times
· Calculation of signals for optimum laser calibration for write speed up to four times
· Fast track count amplifier
· Spot position measurement for alignment of photo diodes
· Reference voltage for laser controller
· On-chip band gap and DACs for accurate and adjustable current/gain settings
· I2C-bus microcontroller interface for programmable gain, speed switching and function selection
· All functions available for CD-R and CD-RW systems.

 TZA1020 (AEGER2) is an analog pre-processor IC for CD-R and CD-RW systems with 3-spots push-pull tracking system. The IC interfaces directly to the photo diodes.
 The device generates signals for laser power calibration and laser power control during disc writing. Normalized error signals are generated for servo control and wobble detection. An HF current amplifier is implemented to detect the actual HF data signal. The Fast Track Count (FTC) amplifier generates a radial error signal to allow fast track counting.
 TZA1020A (AEGER2A) is similar to the TZA1020, except for non-clamped MIRN, which allows operation with IGUANA.


댓글을 달아 주세요 Comment