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DAC family suitable for ‘under the hood’ applications

Milpitas, Calif. — Linear Technology developed the LTC2630, a family of 12-bit, 10-bit and 8-bit digital-to-analog converters (DACs) in 2.1 x 2-mm SC70 packages. The LTC2630 offers the choice of an internal 2.5 V or 4.096 V, 10 ppm/°C full-scale reference. These single-voltage output DACs achieve 12-bit DC performance of ±1LSB (max) integral nonlinearity error. The LTC2630 is suitable for “under the hood” automotive voltage adjustment, and operates over the H-grade temperature range of -40°C to 125°C, in addition to the I grade (-40°C to 85°C) and C-grade (0°C to 70°C) temperature ranges. The family can be used in a range of portable and space-constrained applications including battery-powered, consumer and process control equipment.

The DACs draw 160 µA of supply current at 3 V and 180 µA at 5 V. Communicating via a 3-wire SPI-compatible serial interface at clock rates up to 50 MHz, the LTC2630 DAC output settles for a half-scale step in less than 5 µs. Operating from a single 2.7 V to 5.5 V supply, the output can swing to the internal reference voltage or rail-to-rail to the supply voltage. The DAC outputs can power up to zero-scale or mid-scale, allowing more flexibility for those designs which can't be forced to ground when power is first applied.

Availability: Now
Pricing: LTC2630-8 begins at $0.98 each in 1,000-piece quantities; LTC2630-10 begins at $1.24 in 1,000-piece quantities; LTC2630-12 begins at $1.43 each in 1,000-piece quantities
Data Sheet: LTC2630 family

Linear Technology, 408-432-1900, www.linear.com

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