MCP4716 datasheet(41/86 Pages) MICROCHIP

41 / 86 page

DS22272A-page 41

MCP4706/4716/4726

TABLE 4-3:

STATUS BITS OPERATION

TABLE 4-4:

CONFIGURATION BITS

TABLE 4-5:

CONFIGURATION BIT VALUES AFTER POR/BOR EVENT

DAC REGISTER BITS

Name

Function

RDY/BSY

This bit indicates the state of the EEPROM program memory

= EEPROM is not in a programming cycle

= EEPROM is in a programming cycle

POR

Power-On-Reset status indicator (flag)

= Device is powered on with VDD > VPOR.

Ensure that VDD is above VDD(MIN) to ensure proper operation.

= Device is in powered off state. If this value is read, VDD < VDD(MIN) < VPOR.

Unreliable device operation should be expected.

Name

Function

VREF1:VREF0

Resistor Ladder Voltage Reference (VRL) selection bits

=VDD (Unbuffered)

=VREF pin (Unbuffered)

=VREF pin (Buffered)

PD1:PD0

Power-Down selection bits

When the DAC is powered down, most of the internal circuits are powered off and the op amp is

disconnected from the VOUT pin.

= Not Powered Down (Normal operation)

= Powered Down - VOUT is loaded with 1 kΩ resistor to ground.

= Powered Down - VOUT is loaded with 100 kΩ resistor to ground.

= Powered Down - VOUT is loaded with 500 kΩ resistor to ground.

Note:

See Table 4-2 and Figure 4-5 for more details.

Gain selection bit

1x (gain of 1)

2x (gain of 2). Not applicable when VDD is used as VRL

Note:

If VREF = VDD, the device uses a gain of 1 only, regardless of the gain selection bit (G)

setting.

R/W

Comment

Bit Name

VREF1

VREF0

PD1

PD0

POR Event

0(1)

When VDD transitions from VDD < VPOR to VDD > VPOR

BOR Event

00110

When VDD transitions from VDD > VBOR to VDD < VBOR

Note 1:

Default configuration when the device is shipped to customer. The POR/BOR value may be modified by

writing the corresponding nonvolatile configuration bit.

R/W

Comment

Bit Name

—(2)

MCP4706

—(2)

MCP4716

D11

D10

MCP4726

POR/BOR Event

0(1)

Note 1:

Default configuration when the device is shipped to customer. The POR/BOR value may be modified by

writing the corresponding nonvolatile configuration bit.

This device does not implement this bit, so there is no corresponding POR/BOR value.

MCP4716 bảng dữ liệu(PDF) 41 Page - Microchip Technology

MCP4716 bảng dữ liệu(HTML) 41 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86

bảng dữ liệu tải về

Link URL