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參數(shù)資料
| 型號： | LTC1426CMS8 |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC PWM D/A CONV 6BIT DUAL 8-MSOP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 位數(shù)： | 6 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 2 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 550µW |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 管件 |
| 輸出數(shù)目和類型： | 2 電壓，單極 |
| 采樣率（每秒）： | * |
3
LTC1426
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIL
CLK Low Level
VCC = 4.5V
SHDN
q
0.8
V
Input Voltage (Note 5)
CLK1, CLK2
q
0.8
V
VCC = 2.7V
SHDN
q
0.45
V
CLK1, CLK2
q
0.45
V
IOZ
Three-State Output Leakage
SHDN = 0
q
±5
A
ZIN
CLK Input Resistance
Pushbutton Mode, CLK1/CLK2
2.5
M
fCLK
Clock Frequency
Pulse Mode, VCC = 3.3V
q
1
MHz
Pulse Mode, VCC = 2.7V
q
750
kHz
tCKHI
Clock High Time
Pulse Mode, VCC = 3.3V
q
450
ns
Pulse Mode, VCC = 2.7V
q
600
ns
tCKLO
Clock Low Time
Pulse Mode, VCC = 3.3V
q
450
ns
Pulse Mode, VCC = 2.7V
q
600
ns
tPW
Pulse Width
Pushbutton Mode
q
670
s
tDEB
Debounce Time
Pushbutton Mode
q
10.7
12.8
21.3
ms
tDELAY
Repeat Rate Delay
Pushbutton Mode
q
340
410
680
ms
fREPEAT
Repeat Frequency
Pushbutton Mode
q
11.7
19.5
23.4
Hz
ELECTRICAL CHARACTERISTICS T
A = 25°C, (Note 2) unless otherwise specified.
Note 3: Shutdown current can be negative due to leakage currents if VCC >
VREF or VREF > VCC.
Note 4: Guaranteed by Design. Decouple the VCC and VREF pins to GND
using high quality, low ESR, low ESL 0.1
F capacitors to eliminate PWM
switching noise that may otherwise get coupled into the CLK1/CLK2 high
impedance input buffers. The decoupling capacitors should be located in
close proximity to these pins and the ground line to have maximum effect.
Note 5: Input thresholds apply for both pushbutton and pulse modes.
The q denotes the specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground, unless otherwise
specified. All typicals are given for VCC = VREF = 5V, TA = 25°C and
PWM1/PWM2 output to GND, CPWM = 10pF.
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
CODE
0
– 0.05
DNL
ERROR
(LSB)
– 0.04
– 0.02
– 0.01
0
0.05
0.02
16
32
40
1426 G01
– 0.03
0.03
0.04
0.01
824
48
56
64
VCC = VREF = 5V
TA = 25°C
CODE
0
– 0.05
ERROR
(LSB)
– 0.04
– 0.02
– 0.01
0
0.05
0.02
16
32
40
1426 G02
– 0.03
0.03
0.04
0.01
824
48
56
64
VCC = VREF = 5V
TA = 25°C
OUTPUT CURRENT SINK CAPABILITY (mA)
1
OUTPUT
PULL-DOWN
VOLTAGE
(mV)
100
1000
0.1
10
100
1426 G03
0.1
1
10
85
°C
–40
°C
VCC = 5V
25
°C
Output Pull-Down Voltage
vs Output Current Sink Capability
Integral Nonlinearity (INL)
Differential Nonlinearity (DNL)
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