MAXIM Manuals (Others)

MAX9617-MAX9620 is a low-power, zero-drift operational amplifier with 1.5MHz GBW and 10µV zero-drift input offset voltage. The device is available in SC70 package and suitable for portable consumer, medical and industrial applications.

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The MAX9613/MAX9615 are low-power precision op amps with rail-to-rail inputs and rail-to-rail outputs. They feature precision MOS inputs powered from an internal charge pump to eliminate crossover distortion that is common to complementary input-pair type amplifier architectures. These devices are ideal for a large number of signal pro- cessing applications such as photodiode transimped- ance amplifiers and filtering/amplification of a wide variety of signals in industrial equipment.

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The MAX9614/MAX9616 are low-power precision op amps that feature precision MOS inputs. These devices are ideal for a large number of signal processing applications such as photodiode transimpedance amplifiers and filtering/amplification of a wide variety of signals in industrial equipment. The devices also feature excellent RF immunity, making them ideal for portable applications.

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The MAX4040-MAX4044 micropower op amps operate from a single +2.4V to +5.5V supply or dual ±1.2V to ±2.75V supplies and have rail-to-rail input and output capabilities. They provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. These devices are ideal for any portable/battery-powered system.

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The MAX4240-MAX4244 family of micropower op amps operate from a single +1.8V to +5.5V supply or dual ±0.9V to ±2.75V supplies and have Beyond-the-Rails™ inputs and rail-to-rail output capabilities. These ampli- fiers provide a 90kHz gain-bandwidth product while using only 10µA of supply current per amplifier. The MAX4241/MAX4243 have a low-power shutdown mode that reduces supply current to less than 1µA and forces the output into a high-impedance state. Although the minimum operating voltage is specified at +1.8V, these devices typically operate down to +1.5V. The combina- tion of ultra-low-voltage operation, beyond-the-rails inputs, rail-to-rail outputs, and ultra-low power con- sumption makes these devices ideal for any portable/ two-cell battery-powered system. These amplifiers have an input common-mode range that extends 200mV beyond each rail, and their out- puts typically swing to within 9mV of the rails with a 100kΩ load. Beyond-the-rails input and rail-to-rail out- put characteristics allow the full power-supply voltage to be used for signal range. The combination of low input offset voltage, low input bias current, and high open-loop gain makes them suitable for low-power/low- voltage precision applications. The MAX4240 is offered in a space-saving 5-pin SOT23 package. All specifications are guaranteed over the -40°C to +85°C extended temperature range.

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This document is the datasheet of DS89C420, which introduces the features and characteristics of DS89C420.

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The MAX6979 is a MAXIM-released serial interface LED driver chip with 16 open-drain constant current sinking LED driver outputs rated at 5.5V. The MAX6979 operates from a 3V to 5.5V supply. The MAX6979 supply and the LEDs’ supply can power up in any order. The constant-current outputs are programmed together to up to 55mA using a single external resistor. The MAX6979 operates with a 25Mb, industry-standard, 4-wire serial interface. The MAX6979 includes circuitry that automatically detects open-circuit LEDs.

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DG508A/DG509A are monolithic CMOS analog multiplexers (muxes) produced by Maxim. DG508A is a single 8-channel (1-of-8) mux, and DG509A is a differential 4-channel (2-of-8) mux. Both devices guarantee break-before-make switching. Maxim guarantees that these muxes will not latch up if the power supplies are turned off with the input signals still present. Maxim also guarantees continuous operation when these devices are powered by supplies ranging from ±4.5V to ±18V. DG508A/DG509A are plug-in upgrades for the industry-standard DG08A/DG509A, respectively. Maxim's parts have lower on-resistance, faster enable switching times, and significantly lower leakage currents. DG508A/DG509A also consume significantly lower power, making them ideal for portable equipment. Applications include control systems, data logging systems, aircraft heads-up displays, data acquisition systems, and signal routing.

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The MAX1677 is a compact, high-efficiency, dual-output boost converter designed for portable devices that require two regulated power supplies, typically for logic and liquid crystal displays (LCDs). It can operate with inputs as low as 0.7V, making it compatible with 1, 2, or 3-cell alkaline, NiCd, or NiMH batteries as well as 1-cell lithium-ion batteries. The device does not require external FETs and can maintain regulation while consuming only 20µA, making it ideal for hand-held pen-input and PDA devices operating with low-current sleep states. The primary regulator of the MAX1677 can supply up to 350mA at a factory-preset 3.3V or an adjustable 2.5V to 5.5V output. On-chip synchronous rectification provides efficiencies up to 95%. The 300kHz (or externally clocked) pulse-width-modulation (PWM) operation is particularly suitable for applications requiring low noise, such as those with wireless features. The primary converter also features pin-selectable pulse-frequency-modulation (PFM) operation that consumes only 20µA. A 1µA shutdown state further minimizes battery drain. The MAX1677's secondary step-up converter supplies up to +28V or -28V for LCD bias, varactor tuning, or other high-voltage, low-current functions. Other features of the MAX1677 include a precision reference, logic control inputs for both regulators, and an uncommitted comparator for low-battery detection or a reset function. The MAX1677 is supplied in Maxim's compact 16-pin QSOP package, which occupies minimal space.

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DS2784 is a lithium-ion battery management chip that operates from 2.5V to 4.6V. It supports a single lithium-ion cell or lithium-ion polymer cell. The chip can provide accurate output voltage, temperature and current measurements, and use SHA-1 algorithm and challenge-response authentication mechanism to ensure battery safety. At the same time, the chip also provides 16 bytes of EEPROM storage space for storing battery compensation data and application parameters, which can be used for battery batch and date tracking, or storing system or battery usage statistics. The chip also supports 1-Wire interface, providing 16kbps or 143kbps serial communication to access data registers, control registers and user memory. 1-Wire communication also supports challenge-response battery authentication, using SHA-1 as the hash algorithm, to implement a hash-based message authentication code (HMAC) authentication protocol.

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The MAX5098A is a dual-output, high-switching-frequency DC-DC converter with integrated N-channel switches that can be used either in high-side or low-side configuration. Each output can be configured either as a buck converter or a boost converter. In the buck configuration, this device delivers up to 2A from converter 1 and 1A from converter 2. The MAX5098A also integrates a load-dump protection circuitry that is capable of handling load-dump transients up to 80V for automotive applications. The load-dump protection circuit utilizes an internal charge-pump to drive the gate of an external N-channel MOSFET. When an overvoltage or load-dump condition occurs, the series protection MOSFET absorbs the high voltage transient to prevent damage to lower voltage components. The DC-DC converters operate over a wide operating voltage range from 4.5V to 19V. The MAX5098A operates 180° out-of-phase with an adjustable switching frequency to minimize external components while allowing the ability to make trade-offs between the size, efficiency, and cost. The high switching frequency (up to 2.2MHz) also allows this device to operate outside the AM band for automotive applications. This device utilizes voltage-mode control for stable operation and external compensation, thus the loop gain is tailored to optimize component selection and transient response. This device can be synchronized to an external clock fed at the SYNC input. Also, a clock output (CK) is provided.

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MAX8678 is an integrated white LED charge pump with an audio loudspeaker amplifier. It has high efficiency, adaptive mode switching, and can drive multiple LEDs with constant current for uniform brightness. Through a single-wire serial-pulse interface, the LED current can be adjusted in the range of 0.1mA-24mA in 31 pseudo-logarithmic steps, and the LED current is accurate and well matched throughout the adjustment range. MAX8678 also integrates a single-channel AB class audio amplifier, which can directly drive an 8Ω loudspeaker and obtain 1.1W RMS continuous output power from a 5V power supply with a THD+N of less than 1%. The gain can be adjusted in the range of -9dB to +18dB in ten 3dB steps through a single-wire serial-pulse interface. MAX8678 also has soft-start, thermal shutdown, open-circuit and short-circuit protection, and is packaged in a 16-pin, 3mm x 3mm Thin QFN package (maximum height of 0.8mm).

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The MAX1444 is a 10-bit, 3V analog-to-digital converter (ADC) that features a pipelined 10-stage ADC architecture with fully differential wideband track-and-hold (T/H) input and digital error correction incorporating a fully differential signal path. This ADC is optimized for low- power, high dynamic performance applications in imaging and digital communications.

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The MAX1978/MAX1979 are the smallest, safest, most accurate complete single-chip temperature controllers for Peltier thermoelectric cooler (TEC) modules.

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The MAX3311E/MAX3313E are low-power, 5V EIA/TIA-232-compatible transceivers. All transmitter outputs and receiver inputs are protected to ±15kV using the Human Body Model, making these devices ideal for applications where more robust transceivers are required. Both devices have one transmitter and one receiver. The transmitters have a proprietary low-dropout trans- mitter output stage enabling RS-232-compatible opera- tion from a +5V supply with a single inverting charge pump. These transceivers require only three 0.1µF capacitors and will run at data rates up to 460kbps while maintaining RS-232-compatible output levels. The MAX3311E features a 1µA shutdown mode. In shutdown the device turns off the charge pump, pulls V- to ground, and the transmitter output is disabled. The MAX3313E features an INVALID output that asserts high when an active RS-232 cable signal is connected, signaling to the host that a peripheral is connected to the communication port.

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The MAX3380E/MAX3381E are +2.35V to +5.5V-powered EIA/TIA-232 and V.28/V.24 communication interfaces with low power requirements, high data-rate capabilities, and enhanced electrostatic discharge (ESD) protection on both the TTL and RS-232 sides.

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This datasheet introduces the features and characteristics of the DS2781 battery monitoring chip, including voltage, temperature, current measurement, and battery remaining capacity estimation.

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The MAX9718/MAX9719 is a audio power amplifier that is ideal for portable audio devices with internal speakers. The device features a bridge-tied load (BTL) architecture that provides high-quality, power audio amplification while minimizing external component count.

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The MAX4800A/MAX4802A provide high-voltage switching on eight channels for ultrasonic imaging and printer applications. The devices utilize BCDMOS process technology to provide eight high-voltage low-charge-injection SPST switches, controlled by a 20MHz serial interface. The digital interface operates from a separate VDD supply from +2.7V to +6V. Features include flexible high-voltage supplies up to VPP - VNN = 200V, low-charge-injection, low-capacitance 22Ω switches, and DC to 10MHz analog-signal frequency. The MAX4800A/MAX4802A are drop-in replacements for the Supertex HV2203 and HV2303.

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