器件名称: WM2608
功能描述: Octal 10-bit, Serial Input, Voltage Output DAC with Power Down
文件大小: 128.92KB 共13页
简 介:WM2608 Octal 10-bit, Serial Input, Voltage Output DAC with Power Down
Production Data, April 2001, Rev 1.0
FEATURES
Eight 10-bit DACs in one package Dual supply 2.7V to 5.5V operation DNL ±0.1 LSBs, INL ±0.5 LSBs typical Programmable settling time / power (1.0s typical in fast mode) Microcontroller compatible serial interface Power down mode ( < 0.1A) Monotonic over temperature Data output for daisy chaining
DESCRIPTION
The WM2608 is an octal, 10-bit, resistor string digital-toanalogue converter. The eight individual DACs contained in the IC can be switched in pairs between fast and slow (low power) operation modes, or powered down, under software control. Alternatively, the whole device can be powered down, reducing current consumption to less than 0.1A. The DAC outputs are buffered by a rail-to-rail amplifier with a gain of two, which is configurable as Class A (fast mode) or Class AB (for low-power mode). The WM2608 has been designed to interface directly to industry standard microprocessors and DSPs, and can operate on two separate analogue and digital power supplies. It is programmed with a 16-bit serial word comprising 4 address bits and up to 12 DAC or control register data bits. All eight DACs can be simultaneously forced to a preset value using a preset input pin. A daisy-chain data output makes it possible to control several of Wolfson’s octal DACs from the same interface, without increasing the number of control lines. The device is available in a 20-pin ……
