
3
LTC1285/LTC1288
LTC1285
LTC1288
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
±3
±3/4
±3
LSB
Gain Error
q
±2
±8
±2
±8
LSB
Analog Input Range
(Note 7 and 8)
q
V
REF Input Range (LTC1285)
2.7
≤ VCC ≤ 6V
V
(Notes 7, 8, and 9)
V
Analog Input Leakage Current (Note 10)
q
±1
A
1.5V to VCC + 0.05V
– 0.05V to VCC + 0.05V
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
S/(N +D)
Signal-to-Noise Plus Distortion Ratio
1kHz Input Signal
67
dB
THD
Total Harmonic Distortion (Up to 5th Harmonic)
1kHz Input Signal
– 80
dB
SFDR
Spurious-Free Dynamic Range
1kHz Input Signal
88
dB
Peak Harmonic or Spurious Noise
1kHz Input Signal
– 88
dB
DYNAMIC ACCURACY
U
W
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
VCC = 3.6V
q
2V
VIL
Low Level Input Voltage
VCC = 2.7V
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 = 2.7V, IO = 10A
q
2.4
2.64
V
VCC = 2.7V, IO = 360A
q
2.1
2.30
V
VOL
Low Level Output Voltage
VCC = 2.7V, IO = 400A
q
0.4
V
IOZ
Hi-Z Output Leakage
CS = High
q
±3
A
ISOURCE
Output Source Current
VOUT = 0V
– 10
mA
ISINK
Output Sink Current
VOUT = VCC
15
mA
RREF
Reference Input Resistance
CS = VIH
2700
M
(LTC1285)
CS = VIL
54
k
IREF
Reference Current (LTC1285)
CS = VCC
q
0.001
2.5
A
tCYC ≥ 640s, fCLK ≤ 25kHz
50
A
tCYC = 134s, fCLK = 120kHz
q
50
70
A
ICC
Supply Current
CS = VCC
q
0.001
±3.0
A
LTC1285, tCYC ≥ 640s, fCLK ≤ 25kHz
150
A
LTC1285, tCYC = 134s, fCLK = 120kHz
q
160
320
A
LTC1288, tCYC ≥ 720s, fCLK ≤ 25kHz
200
A
LTC1288, tCYC = 150s, fCLK = 120kHz
q
210
390
A
DIGITAL AND DC ELECTRICAL CHARACTERISTICS
U
CONVERTER AND MULTIPLEXER CHARACTERISTICS
U
W
U
(Note 5)
fSMPL = 7.5kHz (LTC1285), fSMPL = 6.6kHz (LTC1288) (Note 5)