LINEAR Manuals

The LT1341 is an advanced low power three-driver, five-receiver RS232 transceiver. Included on the chip is a shutdown pin for reducing supply current to near zero. During shutdown one receiver remains active to detect incoming RS232 signals, for example, to wake up a system. All other receivers and the drivers assume high impedance states during shutdown. The driver disable function provides additional control of operating mode. When driver disable is high the charge pump and drivers turn off. Receivers continue to operate during driver disable. New ESD structures on the chip allow the LT1341 to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs on the RS232 line pins. The LT1341 is fully compliant with all EIA RS232 specifications and operates in excess of 120kbaud even driving heavy capacitive loads. One Receiver Remains Active While in Shutdown, ESD Protection Over ±10kV, Uses Small Capacitors: 0.1µF, 0.2µF, 60µA Supply Current in Shutdown, Pin Compatible with LT1137A, 120kBaud Operation for RL = 3k, CL = 2500pF, 250kBaud Operation for RL = 3k, CL = 1000pF, CMOS Comparable Low Power: 60mW, Operates from a Single 5V Supply, Easy PC Layout: Flowthrough Architecture, Rugged Bipolar Design, Outputs Assume a High Impedance State When Off or Powered Down, Absolutely No Latchup, Available in SSOP Package.

This document introduces the features of the LT1782 op amp, including operating voltage range, input range, output range, power consumption, static current, package, etc.

LT1055/LT1056 are precision, high speed JFET input operational amplifiers with very low bias current, offset voltage and drift.

LM199/LM399 is a precision shunt reference with excellent temperature stability, suitable for digital multimeters, precision calibration equipment, current sources and other precision low-cost references.

This data sheet provides detailed information on the LTC2601/LTC2611/LTC2621 16-, 14- and 12-bit, 2.5V to 5.5V single-supply, single DACs that can be used individually or in cascaded applications. These devices feature built-in high performance output buffers and are guaranteed monotonic.

The LT6554 is a high-speed triple video buffer with an internally fixed gain of 1 from Linear Technology Corporation. The individual buffers are optimized for performance with a 1k load and feature a 2VP–P full signal bandwidth of 400MHz, making them ideal for driving very high-resolution video signals. Separate power supply pins for each amplifier boost channel separation to 90dB, allowing the LT6554 to excel in many high-speed applications. While the performance of the LT6554 is optimized for dual supply operation, it can also be used on a single supply as low as 4.5V. Using dual 5V supplies, each amplifier draws only 8mA. When disabled, the amplifiers draw less than 100µA and the outputs become high impedance. Furthermore, the amplifiers are capable of turning on in less than 50ns, making them suitable for multiplexing and portable applications. The LT6554 is manufactured on Linear Technology’s proprietary low voltage complementary bipolar process and is available in the 16-lead SSOP package that fits in the same PCB area as an SO-8 package.

The LT1220 is a high-speed operational amplifier with superior DC performance. It features reduced input offset voltage, lower input bias currents, and higher DC gain compared to similar devices. The circuit is a single gain stage that includes proprietary DC gain enhancement circuitry for precision with high speed. Its high gain and fast settling time make it an ideal choice for data acquisition systems. The circuit is also capable of driving large capacitive loads, making it useful in buffer or cable driver applications.

This document introduces the features of LT1186F DAC programmable CCFL switching regulator (Bits-to-NitsTM), including wide battery input range (4.5V to 30V), grounded lamp or floating lamp configurations, open lamp protection, precision 50µA full-scale DAC programming current, standard SPI mode or pulse mode, DAC setting is retained in shutdown.

The LT1026 is a switched capacitor voltage doubler and inverter on a single monolithic die from Linear Technology Corporation. It can operate from a 4V to 10V input and provides ±7V to ±18V output. Output currents of over 10mA are available. Two charge pumps first double the input voltage then invert the doubled voltage. The LT1026 offers a convenient way of generating additional system voltages without using inductors. Powering interface circuits, op amps or data acquisition circuitry off logic supplies is simplified.

The LTC1293/4/6 is a family of data acquisition systems which contain a serial I/O successive approximation A/D converter. It uses LTCMOS TM switched capacitor technology to perform either 12-bit unipolar, or 11-bit plus sign bipolar A/D conversions. The input multiplexer can be configured for either single ended or differential inputs (or combinations thereof). An on-chip sample and hold is included for all single ended input channels. When the LTC1293/4/6 is idle it can be powered down in applications where low power consumption is desired. The LTC1296 includes a System Shutdown Output pin which can be used to power down external circuitry, such as signal conditioning circuitry prior to the input mux. The serial I/O is designed to communicate without external hardware to most MPU serial ports and all MPU parallel I/O ports allowing up to eight channels of data to be transmitted over as few as three wires.

The LTC ®2435/2435-1 are 2.7V to 5.5V micropower 20-bit differential ∆Σ analog to digital converters with integrated oscillator, 3ppm INL and 0.8ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2435 can be configured for better than 110dB input differential mode rejection at 50Hz or 60Hz ±2%, or it can be driven by an external oscillator for a user defined rejection frequency. The LTC2435-1 can be con- figured for better than 87dB input differential mode rejec- tion over the range of 49Hz to 61.2Hz (50Hz and 60Hz ±2% simultaneously). The internal oscillator requires no external frequency setting components. The converters accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement configurations. The full- scale differential input range is from –0.5VREF to 0VREF.

The LTC1983-3/LTC1983-5 are switching power supplies that can produce negative voltage outputs with a maximum output current of 100mA.