
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
fSMPL = 12.5kHz (LTC1286), fSMPL = 11.1kHz (LTC1298) (Note 5)
CONVERTER AND MULTIPLEXER CHARACTERISTICS
U
W
U
(Note 5)
DYNAMIC ACCURACY
U
W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
VCC = 5.25V
q
2V
VIL
Low Level Input Voltage
VCC = 4.75V
q
0.8
V
IIH
High Level Input Current
VIN = VCC
q
2.5
A
IIL
Low Level Input Current
VIN = 0V
q
–2.5
A
VOH
High Level Output Voltage
VCC = 4.75V, IO = 10A
q
4.0
4.64
V
VCC = 4.75V, IO = 360A
q
2.4
4.62
V
VOL
Low Level Output Voltage
VCC = 4.75V, IO = 1.6mA
q
0.4
V
IOZ
Hi-Z Output Leakage
CS = High
q
±3
A
ISOURCE
Output Source Current
VOUT = 0V
– 25
mA
ISINK
Output Sink Current
VOUT = VCC
45
mA
RREF
Reference Input Resistance
CS = VCC
5000
M
(LTC1286)
CS = GND
55
k
IREF
Reference Current (LTC1286)
CS = VCC
q
0.001
2.5
A
tCYC ≥ 640s, fCLK ≤ 25kHz
q
90
140
A
tCYC = 80s, fCLK = 200kHz
q
90
140
A
ICC
Supply Current
CS = VCC
q
0.001
±3.0
A
LTC1286, tCYC ≥ 640s, fCLK ≤ 25kHz
q
220
460
A
LTC1286, tCYC = 80s, fCLK = 200kHz
q
260
500
A
LTC1298, tCYC ≥ 720s, fCLK ≤ 25kHz
q
320
600
A
LTC1298, tCYC = 90s, fCLK = 200kHz
q
360
640
A
(Note 5)
1.5V to VCC + 0.05V
1.5V to 5.55V
–0.05V to VCC + 0.05V
LTC1286
LTC1298
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Resolution (No Missing Codes)
q
12
Bits
Integral Linearity Error
(Note 6)
q
±3/4
±2
±3/4
±2
LSB
Differential Linearity Error
q
±1/4
±3/4
±1/4
±3/4
LSB
Offset Error
q
3/4
±33/4
±3
LSB
Gain Error
q
±2
±8
±2
±8
LSB
Analog Input Range
(Note 7 and 8)
q
V
REF Input Range (LTC1286)
4.5
≤ VCC ≤ 5.5V
V
(Notes 7, 8, and 9)
5.5V < VCC ≤ 9V
V
Analog Input Leakage Current (Note 10)
q
±1
A
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
U