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LTC1657 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC1657
Description  Parallel 16-Bit Rail-to-Rail Micropower DAC
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1657 Datasheet(HTML) 3 Page - Linear Technology

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3
LTC1657
The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 4.5V to 5.5V, VOUT unloaded, REFOUT tied to REFHI,
REFLO tied to GND, X1/X2 tied to GND, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: External reference REFHI = 2.2V. VCC = 5V.
Note 3: Nonlinearity is defined from code 128 to code 65535 (full scale).
See Applications Information.
Note 4: Digital inputs at 0V or VCC.
Note 5: DAC switched between all 1s and all 0s.
Note 6: Guaranteed by design. Not subject to test.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
AC Performance
Voltage Output Slew Rate
(Note 5)
q
±0.3
±0.7
V/
µs
Voltage Output Settling Time
(Note 5) to 0.0015% (16-Bit Settling Time)
20
µs
(Note 5) to 0.012% (13-Bit Settling Time)
10
µs
Digital Feedthrough
0.3
nV •s
Midscale Glitch Impulse
DAC Switch Between 8000H and 7FFFH
8nV •s
Output Voltage Noise Spectral Density
At 1kHz
250
nV/
√Hz
Digital I/O
VIH
Digital Input High Voltage
q
2.4
V
VIL
Digital Input Low Voltage
q
0.8
V
VOH
Digital Output High Voltage
q
VCC – 1
V
VOL
Digital Output Low Voltage
q
0.4
V
ILEAK
Digital Input Leakage
VIN = GND to VCC
q
±10
µA
CIN
Digital Input Capacitance
(Note 6)
10
pF
Switching Characteristics
tCS
CS (MSB or LSB) Pulse Width
q
40
ns
tWR
WR Pulse Width
q
40
ns
tCWS
CS to WR Setup
q
0ns
tCWH
CS to WR Hold
q
0ns
tDWS
Data Valid to WR Setup
q
40
ns
tDWH
Data Valid to WR Hold
q
0ns
tLDAC
LDAC Pulse Width
q
40
ns
tCLR
CLR Pulse Width
q
40
ns
Reference Output (REFOUT)
Reference Output Voltage
q
2.036
2.048
2.060
V
Reference Output
15
ppm/
°C
Temperature Coefficient
Reference Line Regulation
VCC = 4.5V to 5.5V
q
±1.5
mV/V
Reference Load Regulation
Measured at IOUT = 100µA
q
5
mV/A
Short-Circuit Current
REFOUT Shorted to GND
q
50
100
mA
Reference Input
REFHI, REFLO Input Range
(Note 6) See Applications Information
X1/X2 Tied to VOUT
q
0VCC – 1.5
V
X1/X2 Tied to GND
q
0VCC/2
V
REFHI Input Resistance
q
16
25
k


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