Manualsbrain.com
  1. Инструкции и руководства
  2. Бренды
  3. Linear Technology
  4. LTC2654-L16 Quad SPI 16-bit Voltage Output DAC with 1.25V Reference, req DC590 DC1678A-A
  5. Техническая Спецификация

Техническая Спецификация для Linear Technology LTC2654-L16 Quad SPI 16-bit Voltage Output DAC with 1.25V Reference, req DC590 DC1678A-A DC1678A-A

Модели
DC1678A-A
Скачать
Страница из 24
LTC2654
8
2654f
 ELECTRICAL CHARACTERISTICS
 The 
l
 denotes the specifi cations which apply over the full operating 
temperature range, otherwise specifi cations are at T
A
 = 25°C. V
CC
 = 4.5V to 5.5V, V
OUT
 unloaded unless otherwise specifi ed. 
TIMING CHARACTERISTICS
 The 
l
 denotes the specifi cations which apply over the full operating temperature 
range, otherwise specifi cations are at T
A
 = 25°C. 
LTC2654B-L16/LTC2654-L12/LTC2654B-H16/LTC2654-H12
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
 = 2.7V to 5.5V
t
1
SDI Valid to SCK Setup
l
4
ns
t
2
SDI Valid to SCK Hold
l
4
ns
t
3
SCK High Time
l
9
ns
t
4
SCK Low Time
l
9
ns
t
5
CS/LD Pulse Width
l
10
ns
t
6
LSB SCK High to CS/LD High
l
7
ns
t
7
CS/LD Low to SCK High
l
7
ns
t
8
SDO Propagation Delay from SCK Falling Edge
C
LOAD
 = 10pF
V
CC
 = 4.5V to 5.5V
V
CC
 = 2.7V to 4.5V
l
l
20
45
ns
ns
t
9
CLR Pulse Width
l
20
ns
t
10
CS/LD High to SCK Positive Edge
l
7
ns
t
12
LDAC Pulse Width
l
15
ns
t
13
CS/LD High to LDAC High or Low Transition 
l
200
ns
SCK Frequency
50% Duty Cycle
l
50
MHz
Note 1: Stresses beyond those listed under Absolute Maximum Ratings 
may cause permanent damage to the device. Exposure to any Absolute 
Maximum Rating condition for extended periods may affect device 
reliability and lifetime.
Note 2: All voltages with respect to GND. 
Note 3: Linearity and monotonicity are defi ned from code k
L
 to code 2
N
–1, 
where N is the resolution and k
L
 is the lower end code for which no output 
limiting occurs. For V
REF
 = 2.5V and N = 16, k
L
 = 128 and linearity is 
defi ned from code 128 to code 65535. For V
REF
 = 2.5V and N = 12, k
L
 = 8 
and linearity is defi ned from code 8 to code 4,095.
Note 4: Inferred from measurement at code 128 (LTC2654-16), or code 8 
(LTC2654-12).
Note 5: DC Crosstalk is measured with V
CC
 = 5V and using internal 
reference, with the measured DAC at mid-scale.
Note 6: This IC includes current limiting that is intended to protect the 
device during momentary overload conditions. Junction temperature can 
exceed the rated maximum during current limiting. Continuous operation 
above the specifi ed maximum operating junction temperature may impair 
device reliability.
Note 7: Temperature coeffi cient is calculated by dividing the maximum 
change in output voltage by the specifi ed temperature range. Maximum 
temperature coeffi cient is guaranteed for C-grade only.
Note 8: Digital inputs at 0V or V
CC
.
Note 9: Guaranteed by design and not production tested.
Note 10: Internal Reference mode. DAC is stepped ¼ scale to ¾ scale and 
¾ scale to ¼ scale. Load is 2kΩ in parallel with 200pF to GND.
Note 11: V
CC
 = 5V, Internal Reference mode. DAC is stepped ±1 LSB 
between half-scale and half-scale - 1. Load is 2kΩ in parallel with 200pF 
to GND.
Note 12: DAC to DAC Crosstalk is the glitch that appears at the output 
of one DAC due to a full-scale change at the output of another DAC. It is 
measured with V
CC
 = 5V and using internal reference, with the measured 
DAC at mid-scale. C
REFIN/OUT
 = No Load.
Note 13: Gain error specifi cation may be degraded for reference input 
voltages less than 1V. See Gain Error vs Reference Input Voltage curve in 
the Typical Performance Characteristics section.
LTC2654B-H16/ LTC2654-H12 (Internal Reference = 2.048V)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
e
n
Output Voltage Noise Density
At f = 1kHz
At f = 10kHz
85
80
nV/√Hz
nV/√Hz
Output Voltage Noise
0.1Hz to 10Hz, Internal Reference
0.1Hz to 200kHz, Internal Reference
12
450
μV
P-P
μV
P-P