MCP48FVB21 datasheet(34/84 Pages) MICROCHIP

部件名	MCP48FVB21

功能描述	8-/10-/12-Bit Single/Dual Voltage Output Volatile Digital-to-Analog Converters with SPI Interface

PDF	84 Pages

Scroll/Zoom	100%

制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

标志

34 / 84 page

MCP48FVBXX

DS20005466A-page 34

 2015 Microchip Technology Inc.

Reference Control Register. Each DAC has two bits to

control the source of the voltage reference of the DAC.

VOLTAGE REFERENCE (VREF) CONTROL REGISTER (ADDRESS 08h)

U-0

R/W-0 R/W-0 R/W-0 R/W-0

Single

—

—(1)

—(1) VR0B VR0A

Dual

—

VR1B VR1A VR0B VR0A

bit 15

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

= Single-channel device

= Dual-channel device

Single

Dual

bit 15-2

bit 15-4

Unimplemented:

Read as ‘0’

bit 1-0

bit 3-0

VRxB-VRxA:

DAC Voltage Reference Control bits

=VREF pin (Buffered); VREF buffer enabled

=VREF pin (Unbuffered); VREF buffer disabled

=Internal Band Gap (1.22V typical); VREF buffer enabled

VREF voltage driven when powered-down

=VDD (Unbuffered); VREF buffer disabled.

Use this state with Power-Down bits for lowest current.

Note 1:

Unimplemented bit, read as ‘0’.

MCP48FVB21 数据表(PDF) 34 Page - Microchip Technology

MCP48FVB21 数据表(HTML) 34 Page - Microchip Technology

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