Datasheet

3
LTC1588/LTC1589/LTC1592
1588992fa
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are T
A
= T
MIN
to T
MAX
, V
CC
= 5V, V
REF
= 5V, I
OUT2
= AGND = GND = 0V.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference Input
R
REF
DAC Input Resistance (Unipolar) (Note 6) ● 5710 kΩ
R1, R2 R1, R2 Resistance (Notes 6, 11) ● 10 14 20 kΩ
R
OFS
Offset Resistance (Bipolar) ±5V, ±10V, ±2.5V Ranges ● 10 14 20 kΩ
–2.5V to 7.5V Range
● 20 28 40 kΩ
R
FB
Feedback Resistance (Unipolar) 5V Range ● 5710 kΩ
10V Range
● 10 14 20 kΩ
Feedback Resistance (Bipolar) ±5V and –2.5V to 7.5V Ranges ● 10 14 20 kΩ
±10V Range
● 20 28 40 kΩ
±2.5V Range
● 5710 kΩ
Analog Outputs (Note 4)
C
OUT
Output Capacitance (I
OUT1
) DAC Load All 1s 160 pF
DAC Load All 0s 100 pF
AC Performance (Note 4)
Settling Time 5V Range, 0V to 5V Step with LT1468 (Note 7) 2 µs
Midscale Glitch Impulse (Note 10) 2 nV-s
Multiplying Feedthrough Error V
REF
= ±10V, 10kHz Sine Wave 1 mV
P-P
THD Total Harmonic Distortion (Note 8) Multiplying –108 dB
Output Noise Voltage Density (Note 9) At I
OUT1
11 nV/√Hz
Digital Inputs
V
IH
Digital Input High Voltage ● 2.4 V
V
IL
Digital Input Low Voltage ● 0.8 V
I
IN
Digital Input Current ● ±1 µA
C
IN
Digital Input Capacitance V
IN
= 0V (Note 4) ● 8pF
Digital Outputs
V
OH
Digital Output High Voltage I
OH
= 200µA ● 4V
V
OL
Digital Output Low Voltage I
OL
= 1.6mA ● 0.4 V
Timing Characteristics
t
1
Serial Input Valid to SCK Setup Time ● 60 ns
t
2
Serial Input Valid to SCK Hold Time ● 0ns
t
3
SCK Pulse Width High ● 35 ns
t
4
SCK Pulse Width Low ● 35 ns
t
5
CS/LD Pulse High Width ● 360 ns
t
6
LSB SCK High to CS/LD High ● 35 ns
t
7
CS/LD Low to SCK High ● 0ns
t
8
SCK to SDO Propagation Delay C
LOAD
= 50pF ● 20 180 ns
t
9
SCK Low to CS/LD Low ● 35 ns
t
10
Clear Pulse Low Width ● 100 ns
t
11
CS/LD High to SCK Positive Edge ● 35 ns
SCK Frequency Non-Daisy Chain (Note 12) ● 14.2 MHz
Daisy Chain (Note 13) 4.1 MHz