AD7841ASZ: 8 14-bit DACs Chip

The component AD7841ASZ is one of the AD7841 series in electronic components terms. AD7841 is usually seen in automatic test equipment, process control and general purpose instrumentation. The AD7841 contains eight 14-bit DACs on one monolithic chip. It has output voltages with a full-scale range of ±10 V from reference voltages of ±5 V. The AD7841 accepts 14-bit parallel loaded data from the external bus into one of the input registers under the control of the

WR, CS and DAC channel address pins, A0–A2. The DAC outputs are updated on reception of new data into the DAC registers. All the outputs may be updated simultaneously by taking the LDAC input low. Each DAC output is buffered with a gain-of-two amplifier into which an external DAC offset voltage can be inserted via the DUTGNDx pins.

FEATURES:

1.       Voltage Outputs

2.       Offset Adjust for Each DAC Pair

3.       Reference Range of 65 V

4.       Maximum Output Voltage Range of 610 V

5.       615 V 6 10% Operation

6.       Clear Function to User-Defined Voltage

7.       44-Lead MQFP Package

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Main Fears of ATTINY261A-SU Componen

The ATTINY261A-SU is an electronic component that introduced by AMTEL Inc. and now this type of series has been available on Hqew.net. 

Let’s get close to this ATTINY261 series today, below are their main features:

Features:

• High Performance, Low Power AVR 8-Bit Microcontroller

• Advanced RISC Architecture

– 123 Powerful Instructions – Most Single Clock Cycle Execution

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

– Up to 20 MIPS Throughput at 20 MHz

• High Endurance Non-volatile Memory Segments

– 2/4/8K Bytes of In-System Self-Programmable Flash Program Memory

• Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes of In-System Programmable EEPROM

• Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes of Internal SRAM

– Data retention: 20 Years at 85°C / 100 Years at 25°C

– In-System Programmable via SPI Port

– Programming Lock for Software Security

• Peripheral Features

– One 8/16-bit Timer/Counter with Prescaler

– One 8/10-bit High Speed Timer/Counter with Prescaler

• 3 High Frequency PWM Outputs with Separate Output Compare Registers

• Programmable Dead Time Generator

– 10-bit ADC

• 11 Single-Ended Channels

• 16 Differential ADC Channel Pairs

• 15 Differential ADC Channel Pairs with Programmable Gain (1x, 8x, 20x, 32x)

– On-chip Analog Comparator

– Programmable Watchdog Timer with Separate On-chip Oscillator

– Universal Serial Interface with Start Condition Detector

– Interrupt and Wake-up on Pin Change

• Special Microcontroller Features

– debugWIRE On-chip Debug System

– Power-on Reset and Programmable Brown-out Detection

– Internal Calibrated Oscillator

– External and Internal Interrupt Sources

– Four Sleep Modes: Low Power Idle, ADC Noise Reduction, Standby and Power- Down

– On-Chip Temperature Sensor

• I/O and Packages

– 16 Programmable I/O Lines

– 20-pin PDIP, 20-pin SOIC, 20-pin TSSOP and 32-pad MLF

• Operating Voltage

– 1.8 – 5.5V

• Speed Grades

– 0 – 4 MHz @ 1.8 – 5.5V

– 0 – 10 MHz @ 2.7 – 5.5V

– 0 – 20 MHz @ 4.5 – 5.5V

• Power Consumption at 1MHz, 1.8V, 25°C

– Active: 200 µA

– Power-Down Mode: 0.1 µA

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CM108: USB Audio Solution

As one of the Integrated circuits part, CM108 is a highly integrated single chip USB audio solution. All essential analog modules are embedded in CM108, including dual DAC and earphone driver, ADC, microphone booster, PLL, regulator, and USB transceiver. It is very suitable for USB headset, USB earphone or USB audio interface box application. Many features are programmable with jumper pins or external EEPROM. In addition, audio adjustment can be easily controlled via specific HID compliant volume control pins. For value added application, external codec or audio DSP can be connected to CM108 via I²S pin for further processing. 4 GPIO pins can be accessed with customer application software for additional value added application.

FEATURES for such IC part: 

1. Compliant with USB 2.0 Full Speed Operation

2. Compliant with USB Audio Device Class Specification v1.0

3. Supports USB Suspend / Resume Mode and Remote Wakeup with Volume Control Pins

4. Single 12MHz Crystal Input with On-chip PLL and Embedded USB Transceiver

5. Jumper Pin for Speaker Mode (Playback Only) or Headset Mode (Playback + Recording)

6. For Headset Mode, USB Audio Function Topology has 2 Input Terminals, 2 Output Terminals, 1 Mixer Unit, 1 Selector Unit, and 3 Feature Units

7. Jumper Pin for Mixer Unit Enable / Disable under Headset Mode

8. For Speaker Mode, USB Audio Function  Topology has 1 Input Terminal, 1 Output Terminal, and 1 Feature Unit

9. Support One Control Endpoint, One Isochronous Out Endpoint, One Isochronous In Endpoint, and One Interrupt In Endpoint

10. Alternate Zero Bandwidth Setting for Releasing Playback Bandwidth on USB Bus w

this Device is Inactive

11. Supports AES/EBU, IEC60958, S/PDIF Consumer Formats for Stereo PCM Da

S/PDIF Output

12. Volume Up, Volume Down, and Playback Mute Pins support USB HID device clas

Host Control Synchronization

13. Record Mute Pin with LED Indicator for Record Mute Status

14. External EEPROM Interface for Vendor Specific USB VID, PID, and Serial Numbe

15. EEPROM Write Function via Vendor Specific request for Mass Produ

Convenience

16. Customized Embedded VID, PID, and Product String by Customer Request

17. 4 GPIO Pins with Read/Write via HID Interface

18. Jumper Pin to Set the Output Voltage Swing (3.5V or 2.5V)

19. Jumper Pin to Set the Power Mode (100mA or 500mA, Bus Power or Self Power)

20. Isochronous Transfer uses Adaptive Mode with Internal PLL for Synchronization

21. 48K / 44.1KHz Sampling Rate for Both Playback and Recording

22. Soft Mute Function

Electronic Components Stirs Auto’s Fear

During 11 March’s earthquake, many electronic companies plant suffered badly in this disaster. It is said a small electronic component that measures airflow to car engines is becoming a big worry for the auto industry in the wake of Japan's earthquake and tsunami.

One component coming under increased scrutiny goes into mass airflow sensors. Made by Hitachi Automotive Systems, a unit of Hitachi Ltd., at a plant north of Tokyo that was damaged by the quake and remains shut down, the electronic part is used by about a dozen auto makers.

The disaster has forced auto and parts plants throughout Japan to shut down. General Motors Co., Toyota Motor Corp. and PSA Peugeot-Citroën have cut or are making plans to curb output of thousands of vehicles in the U.S. and Europe due to concerns about a shortage of critical parts made in Japan. 

News from USA and Canada said, this earthquake really stirred a huge fear in Auto industry. On Wednesday, Toyota warned employees it expects to halt some production in the U.S. and Canada as a result of shortages of parts from Japanese suppliers. 'It is clear we will incur some non-production time,' the company said in a memo. 'The amount of non-production is still uncertain.'

1SMA5919BT3G: Complete New Line of 1.5 Watt Zener Diodes

The product 1SMA5919BT3G is one of the electronic components of Diodes & Transistors. Its advantages are offered below,

• Standard Zener Breakdown Voltage Range − 3.3 V to 68 V

• ESD Rating of Class 3 (>16 kV) per Human Body Model

• Flat Handling Surface for Accurate Placement

• Package Design for Top Slide or Bottom Circuit Board Mounting

• Low Profile Package

• Ideal Replacement for MELF Packages

• Pb−Free Packages are Available

Mechanical Characteristics of 1SMA5919BT3G

CASE: Void-free, transfer-molded plastic

FINISH: All external surfaces are corrosion resistant with readily solderable leads

MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260°C for 10 seconds

POLARITY: Cathode indicated by molded polarity notch or cathode band

FLAMMABILITY RATING: UL 94 V−0 @ 0.125 in

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OPA365AIDBVR: A Electronic Component with Variety of Uses

The component OPA365AIDBVR is included in the OPAx365 series that are usually seen in signal conditioning, DATA ACQUISITION, ACTIVE FILTERS, TEST EQUIPMENT and AUDIO in electronic components industry.

The OPAx365 zero-crossover series, rail-to-rail, high-performance, CMOS operational amplifiers are optimized for very low voltage, single-supply applications. Rail-to-rail input/output, low-noise (4.5nV/√Hz) and high-speed operation (50MHz Gain Bandwidth) make these devices ideal for driving sampling analog-to-digital converters (ADCs). Applications include audio, signal conditioning, and sensor amplification. The OPA365 family of op amps are also well-suited for cell phone power amplifier control loops. Special features include an excellent common-mode rejection ratio (CMRR), no input stage crossover distortion, high input impedance, and rail-to-rail input and out-put swing. The input common-mode range includes both the negative and positive supplies. The output voltage swing is within 10mV of the rails. The OPA365 (single version) is available in the micro-SIZE SOT23-5 and SO-8 packages. The OPA2365 (dual version) is offered in the SO-8 package. All versions are specified for operation from −40°C to +125°C.

Single and dual versions have identical specifications for maximum design flexibility.

FEATURES

1. GAIN BANDWIDTH: 50MHz

2. ZERO−CROSSOVER DISTORTION TOP

−  Excellent THD+N: 0.0004%

−  CMRR: 100dB (min)

−  Rail-to-Rail Input and Output

−  Input 100mV Beyond Supply Ra

3. LOW NOISE: 4.5nV/Hz at 100kHz

4. SLEW RATE: 25V/µs

5. FAST SETTLING: 0.3µs to 0.01%

6.PRECISION:

−  Low Offset: 100µV

−  Low Input Bias Current: 0.2pA

7. 2.2V TO 5.5V OPERATION

AS1100WL: Led Driver for 7 Segment Numeric Displays

The AS1100WL is belonged to the AS1100 series in electronic components products. The AS1100 series are often used in Bar-Graph Displays, Industrial Controllers, Panel Meters, LED Matrix Displays and White Goods.

The AS1100 is an LED driver for 7 segment numeric displays of up to 8 digits. The AS1100 can be programmed via a conventional 4 wire serial interface. It includes a BCD code-B decoder, a multiplex scan circuitry, segment and display drivers and a 64 Bit memory. The memory is used to store the LED settings, so that continuous reprogramming is not necessary.

Every individual segment can be addressed and updated separately. Only one external resistor is required to set the current through the LED display. Brightness can be controlled either in an analog or digital way. The user can choose the internal code-B decoder to display numeric

digits or to address each segment directly. The AS1100 features an extremely low shutdown current of only 20µA. and an operational current of less than 500µA. The number of visible digits can be programmed as well. The AS1100 can be reset by software and an external clock can be used. Several test modes support easy debugging. The AS1100 is fully compatible to the MAX 7219. AS1100 is offered in a 24 pins PDIP and SOIC package.

Key Features of AS1100 Series:

-  10MHz Serial Interface

-  Individual LED Segment Control

-  Decode/No-Decode Digit Selection

-  20µA Low-Power Shutdown (Data Retained)

-  Extremely low Operating Current 0.5mA in open loop

-  Digital and Analog Brightness Control

-  Display Blanked on Power-Up

-  Drive Common-Cathode LED Display

-  Software Reset

-  Optional External clock

-  24-Pin DIP and SO Packages

-  Fully compatible to MAX7219

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