參數(shù)資料
型號(hào)： DAC1222LJ
英文描述： 12-Bit Digital-to-Analog Converter
中文描述： 12位數(shù)字到模擬轉(zhuǎn)換器
文件頁數(shù)： 8/14頁
文件大?。?/td> 262K
代理商： DAC1222LJ
Converter Electrical Characteristics (Continued)
The following specifications apply for AVCC e DVCC e 5V VREF e 265V VBIAS e 14V RL e 2kX (RL is the load resistor on
the analog outputs – pins 2 13 17 and 23) and fCLK e 10 MHz unless otherwise specified Boldface limits apply for TA
e
TJ from TMIN to TMAX All other limits apply for TA e 25 C
Symbol
Parameter
Conditions
Typical
Limit
Units
(Note 3)
(Note 4)
(Limits)
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
VIN(1)
Logical ‘‘1’’ Input Voltage
AVCC e DVCC e 55V
20
V (min)
VIN(0)
Logical ‘‘0’’ Input Voltage
AVCC e DVCC e 45V
08
V (max)
IIL
Digital Input Leakage Current
1
m
A (max)
CIN
Input Capacitance
4
pF
COUT
Output Capacitance
5
pF
VOUT(1)
Logical ‘‘1’’ Output Voltage
ISOURCE e 08 mA
24
V (min)
VOUT(0)
Logical ‘‘0’’ Output Voltage
ISINK e 32 mA
04
V (max)
VINT
Interrupt Pin Output Voltage
10 kX Pullup
04
V (max)
IS
Supply Current
Outputs Unloaded
14
20
mA
REFERENCE INPUT CHARACTERISTICS
VREF
Input Voltage Range
0 – 275
V
RREF
Input Resistance
7
4
kX (min)
9
kX (max)
CREF
Input Capacitance
Full-Scale Data Input
25
pF
VBIAS INPUT CHARACTERISTICS
VBIAS
VBIAS Input Voltage Range
03 – 14
V
Input Leakage
1
m
A
CBIAS
Input Capacitance
9
pF
BANDGAP REFERENCE CHARACTERISTICS
(CL e 220mF)
VREFOUT
Output Voltage
265 g 2%
V
D
VREF DT
Tempco
(Note 23)
29
ppm C
Line Regulation
45V k VCC k 55V IL e 4mA
5
mV
D
VREF DIL
Load Regulation
0 k IL k 4mA
10
mV
b
1 k IL k 0 mA
25
mV
ISC
Short Circuit Current
VREFOUT e 0V
12
mA
AC ELECTRICAL CHARACTERISTICS
tDS
Data Setup Time
15
ns (min)
tDH
Data Hold Time
0
ns (min)
tCS
Control Setup Time
15
ns (min)
tCH
Control Hold Time
0
ns (min)
fWMAX
Clock Frequency Write
10
MHz (max)
fRMAX
Clock Frequency Readback
5
MHz (max)
tH
Minimum Clock High Time
20
ns (min)
tL
Minimum Clock Low Time
20
ns (min)
3
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