Internal Voltage Reference (VREF
參數(shù)資料
型號: MCP4822-E/SN
廠商: Microchip Technology
文件頁數(shù): 14/19頁
文件大?。?/td> 0K
描述: IC DAC 12BIT DUAL W/SPI 8SOIC
標準包裝: 100
設置時間: 4.5µs
位數(shù): 12
數(shù)據(jù)接口: 串行,SPI?
轉換器數(shù)目: 2
電壓電源: 單電源
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOICN
包裝: 管件
輸出數(shù)目和類型: 2 電壓,單極;2 電壓,雙極
采樣率(每秒): *
產品目錄頁面: 673 (CN2011-ZH PDF)
MCP4802/4812/4822
DS22249A-page 4
2010 Microchip Technology Inc.
Internal Voltage Reference (VREF)
Internal Reference Voltage
VREF
2.008
2.048
2.088
V
VOUTA when G = 1x and
Code = 0xFFFh
Temperature Coefficient
VREF/°C
125
325
ppm/°C
-40°C to 0°C
0.25
0.65
LSb/°C
-40°C to 0°C
45
160
ppm/°C
0°C to +85°C
0.09
0.32
LSb/°C
0°C to +85°C
Output Noise (VREF Noise)
ENREF
(0.1-
10 Hz)
—290
Vp-p
Code = 0xFFFh, G = 1x
Output Noise Density
eNREF
(1 kHz)
—1.2
V/
Hz Code = 0xFFFh, G = 1x
eNREF
(10 kHz)
—1.0
V/
Hz Code = 0xFFFh, G = 1x
1/f Corner Frequency
fCORNER
—400
Hz
Output Amplifier
Output Swing
VOUT
0.01 to
VDD – 0.04
V
Accuracy is better than 1 LSb for
VOUT = 10 mV to (VDD–40 mV)
Phase Margin
PM
66
Degree
(°)
CL= 400 pF, RL =
Slew Rate
SR
0.55
V/s
Short Circuit Current
ISC
—15
24
mA
Settling Time
tSETTLING
4.5
s
Within 1/2 LSb of final value from
1/4 to 3/4 full-scale range
Dynamic Performance (Note 2)
DAC-to-DAC Crosstalk
<10
nV-s
Major Code Transition Glitch
45
nV-s
1 LSb change around major carry
(0111...1111 to
1000...0000)
Digital Feedthrough
<10
nV-s
Analog Crosstalk
<10
nV-s
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, VDD = 5V, VSS = 0V, VREF = 2.048V,
Output Buffer Gain (G) = 2x, RL = 5 k to GND, CL = 100 pF, TA = -40 to +85°C. Typical values are at +25°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:
Guaranteed monotonic by design over all codes.
2:
This parameter is ensured by design, and not 100% tested.
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