Datasheet

3
LTC1286/LTC1298
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
S/(N +D) Signal-to-Noise Plus Distortion Ratio 1kHz/7kHz Input Signal 71/68 dB
THD Total Harmonic Distortion (Up to 5th Harmonic) 1kHz/7kHz Input Signal –84/–80 dB
SFDR Spurious-Free Dynamic Range 1kHz/7kHz Input Signal 90/86 dB
Peak Harmonic or Spurious Noise 1kHz/7kHz Input Signal –90/–86 dB
f
SMPL
= 12.5kHz (LTC1286), f
SMPL
= 11.1kHz (LTC1298) (Note 5)
CONVERTER AND MULTIPLEXER CHARACTERISTICS
UW
U
(Note 5)
DYNAMIC ACCURACY
UW
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
CC
= 5.25V ● 2V
V
IL
Low Level Input Voltage V
CC
= 4.75V ● 0.8 V
I
IH
High Level Input Current V
IN
= V
CC
● 2.5 µA
I
IL
Low Level Input Current V
IN
= 0V ● –2.5 µA
V
OH
High Level Output Voltage V
CC
= 4.75V, I
O
= 10µA ● 4.0 4.64 V
V
CC
= 4.75V, I
O
= 360µA ● 2.4 4.62 V
V
OL
Low Level Output Voltage V
CC
= 4.75V, I
O
= 1.6mA ● 0.4 V
I
OZ
Hi-Z Output Leakage CS = High ● ±3 µA
I
SOURCE
Output Source Current V
OUT
= 0V –25 mA
I
SINK
Output Sink Current V
OUT
= V
CC
45 mA
R
REF
Reference Input Resistance CS = V
CC
5000 MΩ
(LTC1286) CS = GND 55 kΩ
I
REF
Reference Current (LTC1286) CS = V
CC
● 0.001 2.5 µA
t
CYC
≥ 640µs, f
CLK
≤ 25kHz ● 90 140 µA
t
CYC
= 80µs, f
CLK
= 200kHz ● 90 140 µA
I
CC
Supply Current CS = V
CC
● 0.001 ±3.0 µA
LTC1286, t
CYC
≥ 640µs, f
CLK
≤ 25kHz ● 220 460 µA
LTC1286, t
CYC
= 80µs, f
CLK
= 200kHz ● 260 500 µA
LTC1298, t
CYC
≥ 720µs, f
CLK
≤ 25kHz ● 320 600 µA
LTC1298, t
CYC
= 90µs, f
CLK
= 200kHz ● 360 640 µA
(Note 5)
1.5V to V
CC
+ 0.05V
1.5V to 5.55V
–0.05V to V
CC
+ 0.05V
LTC1286 LTC1298
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Resolution (No Missing Codes) ● 12 12 Bits
Integral Linearity Error (Note 6) ● ±3/4 ±2 ±3/4 ±2 LSB
Differential Linearity Error ● ±1/4 ±3/4 ±1/4 ±3/4 LSB
Offset Error ● 3/4 ±33/4±3 LSB
Gain Error ● ±2 ±8 ±2 ±8 LSB
Analog Input Range (Note 7 and 8) ● V
REF Input Range (LTC1286) 4.5 ≤ V
CC
≤ 5.5V V
(Notes 7, 8, and 9) 5.5V < V
CC
≤ 9V V
Analog Input Leakage Current (Note 10) ● ±1 ±1 µA
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
U