LTC2755
6
2755f
CODE
0
–1.0
INL (LSB)
–0.8
–0.4
–0.2
0.0
1.0
0.4
16384
32768
–0.6
0.6
0.8
0.2
49152
65535
2755 G01
V
DD
= 5V
V
REF
= 5V
±10V RANGE
CODE
0
–1.0
DNL (LSB)
–0.8
–0.4
–0.2
0.0
1.0
0.4
16384
32768
–0.6
0.6
0.8
0.2
49152
65535
2755 G02
V
DD
= 5V
V
REF
= 5V
±10V RANGE
TEMPERATURE (°C)
–40
–1.0
INL (LSB)
–0.8
–0.4
–0.2
0.0
1.0
0.4
–20
20
0
40
–0.6
0.6
0.8
0.2
60
80
2755 G04
V
DD
= 5V
V
REF
= 5V
±10V RANGE
+INL
–INL
INL vs Temperature
Integral Nonlinearity (INL) Differential Nonlinearity (DNL)
LTC2755-16
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
DD
= 2.7V to 3.3V
t
22
READ Falling Edge to UPD Rising Edge (Note 11)
●
10 ns
t
23
I/O Bus Hi-Z to Read Rising Edge (Note 11)
●
0ns
t
24
Read Falling Edge to I/O Bus Active (Note 11)
●
35 ns
CLR Timing
t
25
CLR Pulse Width Low
●
20 ns
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: Continuous operation above the specifi ed maximum operating
junction temperature may impair device reliability.
Note 3: Because of the proprietary SoftSpan switching architecture, the
measured resistance looking into each of the specifi ed pins is constant for
all output ranges if the I
OUT1X
and I
OUT2X
pins are held at ground.
Note 4: R1 measured from R
IN1
to R
COM1
; R2 measured from REFA to
R
COM1;
R3 measured from R
IN2
to R
COM2
; R4 measured from REFC to
R
COM2
.
Note 5: Using LT1469 with C
FEEDBACK
= 15pF. A ±0.0015% settling time
of 1.7s can be achieved by optimizing the time constant on an individual
basis. See Application Note 74, Component and Measurement Advances
Ensure 16-Bit DAC Settling Time.
Note 6: Measured at the major carry transition, 0V to 5V range. Output
amplifi er: LT1469; C
FB
= 27pF.
Note 7. Full-scale transition; REF = 0V.
Note 8. Analog Crosstalk is defi ned as the AC voltage ratio V
OUTB
/V
REFA
,
expressed in dB. REFB is grounded, and DAC B is set to 0V-5V span and
zero-, mid- or full- scale code. V
REFA
is a 3V
RMS
, 1kHz sine wave. Crosstalk
between other DAC channels is similar or better.
Note 9. REF = 6V
RMS
at 1kHz. 0V to 5V range. DAC code = FS. Output
amplifi er = LT1469.
Note 10. Calculation from V
n
= √
⎯
4
⎯
k
⎯
T
⎯
R
⎯⎯⎯
B, where k = 1.38E-23 J/°K
(Boltzmann constant), R = resistance (), T = temperature (°K), and B =
bandwidth (Hz). 0V to 5V Range; zero-, mid-, or full- scale.
Note 11. Guaranteed by design, not subject to test.
TIMING CHARACTERISTICS
The ● denotes specifi cations that apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C.
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.