Low Voltage Quad Rail to Rail CMOS Op Amps

The latest additions to the SGS-THOMSON Microelectronics range of CMOS Rail to Rail op amps are the TS904 and TS3V904, quad op amps that combine the high performance of the popular TS914 and TS3V914 devices with a standby mode which reduces power consumption to 0.5áA when the circuits are not in use. Featuring rail to rail operation at both input and output and operating with power supplies as low as 2.7V, the new devices are manufactured using a high performance analogue CMOS technology that gives an extremely low input bias current of typically 1pA and a low supply current of only 200mA for each amplifier. The TS3V904 is especially aimed at 3.3V or battery operated systems and is therefore characterised at both 3V and 5V.

The Input Common Mode Voltage range includes the two supply rails, while the output can swing to within 50mV of either supply rail. This feature is particularly important, for example, in data acquisition applications as it allows A/D converters to be driven to their full input range.

The TS904 and TS3V904 operate from single or dual supplies, ranging from 2.7V to 16V (or from +/-1.35V to +/-8V). Two independent standby pins are provided, each of which controls two of the op amps. These features, coupled with the low supply current, make the devices suitable for all battery-powered applications. The high output current capability (60mA with Vcc = 5V) allows 600 Ohm loads to be driven in telecom and audio applications, for example. Other uses include piezo transducer interfaces and general line driving applications.

Specified for operation over the industrial (-40°C to +125°C) temperature range, the TS904 and TS3V904 are offered in DIP16 or surface mounting SO16 packages.

SGS-THOMSON's Standard Linear group has increased its share of the worldwide amplifier and comparator market from 3.1% in 1991 to 6.9% in 1995 (World Semiconductor Trade Statistics figures). Results for the same period from another independent souce, Dataquest, confirm these figures and also show a rise in world ranking from No. 13 (1991) to No.4 (1995).

Top