參數(shù)資料
型號(hào)： MCP4728EV
廠商： Microchip Technology
文件頁數(shù)： 18/33頁
文件大?。?/td> 0K
描述： BOARD EVAL 12BIT 4CH DAC MCP4728
視頻文件： MCP4728 Evaluation Board Demo
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 4
位數(shù)： 12
數(shù)據(jù)接口： I²C
設(shè)置時(shí)間： 6µs
DAC 型： 電壓
工作溫度： -40°C ~ 125°C
已供物品： 板
已用 IC / 零件： MCP4728
產(chǎn)品目錄頁面： 673 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： MCP4728T-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP
MCP4728-E/UN-ND - IC DAC 12BIT W/I2C 10-MSOP
2010 Microchip Technology Inc.
DS22187E-page 25
MCP4728
TABLE 4-3:
CONFIGURATION BITS
Bit Name
Functions
RDY/BSY
This is a status indicator (flag) of EEPROM programming activity:
1
= EEPROM is not in programming mode
0
= EEPROM is in programming mode
Note: RDY/BSY status can also be monitored at the RDY/BSY pin.
(A2, A1, A0)
Device I2C address bits. See
VREF
Voltage Reference Selection bit:
0
= V
DD
1
= Internal voltage reference (2.048V)
Note: Internal voltage reference circuit is turned off if all channels select external reference
(VREF = VDD).
DAC1, DAC0
DAC Channel Selection bits:
00
= Channel A
01
= Channel B
10
= Channel C
11
= Channel D
PD1, PD0
Power-Down selection bits:
00
= Normal Mode
01
= V
OUT is loaded with 1 kΩ resistor to ground. Most of the channel circuits are powered off.
10
= V
OUT is loaded with 100 kΩ resistor to ground. Most of the channel circuits are powered
off.
11
= V
OUT is loaded with 500 kΩ resistor to ground. Most of the channel circuits are powered
off.
Note: See Table 4-7 and Figure 4-1 for more details.
GX
Gain selection bit:
0
= x1 (gain of 1)
1
= x2 (gain of 2)
Note: Applicable only when internal V
REF is selected. If VREF = VDD, the device uses a gain of 1
regardless of the gain selection bit setting.
UDAC
DAC latch bit. Upload the selected DAC input register to its output register (VOUT):
0
= Upload. Output (V
OUT) is updated.
1
= Do not upload.
Note: UDAC bit affects the selected channel only.
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