The q denotes specifications which apply over the full operat" />
參數(shù)資料
型號(hào)： DC245A-A
廠商： Linear Technology
文件頁(yè)數(shù)： 19/24頁(yè)
文件大?。?/td> 0K
描述： BOARD EVAL LTC1668
設(shè)計(jì)資源： DC245A Design File
DC245A Schematic
標(biāo)準(zhǔn)包裝： 1
DAC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 50M
數(shù)據(jù)接口： 并聯(lián)
設(shè)置時(shí)間： 20ns
DAC 型： 電流
工作溫度： 0°C ~ 70°C
已供物品： 板
已用 IC / 零件： LTC1668
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4
LTC1666/LTC1667/LTC1668
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VDD = 5V, VSS = – 5V, LADCOM = AGND = DGND = 0V, IOUTFS = 10mA.
ELECTRICAL CHARACTERISTICS
LTC1666/LTC1667/LTC1668
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Analog Output
IOUTFS
Full-Scale Output Current
q
110
mA
Output Compliance Range
IFS = 10mA
q
–1
1
V
Output Resistance; RIOUT A, RIOUT B
IOUT A, B to LADCOM
q
0.7
1.1
1.5
k
Output Capacitance
5pF
Reference Output
Reference Voltage
REFOUT Tied to IREFIN Through 2k
2.475
2.5
2.525
V
Reference Output Drift
25
ppm/
°C
Reference Output Load Regulation
ILOAD = 0mA to 5mA
6
mV/mA
Reference Input
Reference Small-Signal Bandwidth
IFS = 10mA, CCOMP1 = 0.1F
20
kHz
Power Supply
VDD
Positive Supply Voltage
q
4.75
5
5.25
V
VSS
Negative Supply Voltage
q
–4.75
–5
–5.25
V
IDD
Positive Supply Current
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
q
35
mA
ISS
Negative Supply Current
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
q
33
40
mA
PDIS
Power Dissipation
IFS = 10mA, fCLK = 25Msps, fOUT = 1MHz
180
mW
IFS = 1mA, fCLK = 25Msps, fOUT = 1MHz
85
mW
Dynamic Performance (Differential Transformer Coupled Output, 50
Double Terminated, Unless Otherwise Noted)
fCLOCK
Maximum Update Rate
q
50
75
Msps
tS
Output Settling Time
To 0.1% FSR
20
ns
tPD
Output Propagation Delay
8ns
Glitch Impulse
Single Ended
15
pV-s
Differential
5
pV-s
tr
Output Rise Time
4ns
tf
Output Fall Time
4ns
iNO
Output Noise
50
pA/
√Hz
Digital Inputs
VIH
Digital High Input Voltage
q
2.4
V
VIL
Digital Low Input Voltage
q
0.8
V
IIN
Digital Input Current
q
±10
A
CIN
Digital Input Capacitance
5pF
tDS
Input Setup Time
q
8ns
tDH
Input Hold Time
q
4ns
tCLKH
Clock High Time
q
5ns
tCLKL
Clock Low Time
q
8ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: For the LTC1666,
±1LSB = ±0.024% of full scale;
for the LTC1667,
±1LSB = ±0.006% of full scale = ±61ppm of full scale;
for the LTC1668,
±1LSB = ±0.0015% of full scale = ±15.3ppm of full scale.
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