LTC1858I Ver la hoja de datos (PDF) - Linear Technology
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LTC1858I Datasheet PDF : 22 Pages
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LTC1857/LTC1858/LTC1859
DYNAMIC ACCURACY The l denotes the specifications which apply over the full operating temperature range,
otherwise specifications are at TA = 25°C. MUXOUT connected to ADC inputs. (Notes 5, 12)
LTC1857
LTC1858
LTC1859
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS
S/(N + D) Signal-to-(Noise + Distortion) Ratio 1kHz Input Signal
74
83
87
dB
THD
Total Harmonic Distortion
1kHz Input Signal,
–101
–101
–101
dB
First Five Harmonics
Peak Harmonic or Spurious Noise 1kHz Input Signal
–103
–103
–103
dB
Channel-to-Channel Isolation
1kHz Input Signal
–120
–120
–120
dB
–3dB Input Bandwidth
1
1
1
MHz
Aperture Delay
–70
–70
–70
ns
Aperture Jitter
60
60
60
ps
Transient Response
Full-Scale Step
(Note 9)
4
4
4
µs
Overvoltage Recovery
(Note 13)
150
150
150
ns
INTERNAL REFERENCE CHARACTERISTICS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VREF Output Voltage
VREF Output Temperature Coefficient
VREF Output Impedance
VREFCOMP Output Voltage
IOUT = 0
IOUT = 0
–0.1mA ≤ IOUT ≤ 0.1mA
IOUT = 0
l 2.475
2.5
±10
8
4.096
2.525
V
ppm/°C
kΩ
V
DIGITAL INPUTS AND DIGITAL OUTPUTS The l denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIH
High Level Input Voltage
VDD = 5.25V
l
2.4
V
VIL
Low Level Input Voltage
VDD = 4.75V
l
0.8
V
IIN
Digital Input Current
VIN = 0V to VDD
l
±10
µA
CIN
Digital Input Capacitance
5
pF
VOH
High Level Output Voltage
VDD = 4.75V, IO = –10µA, OVDD = VDD
4.74
V
VDD = 4.75V, IO = –200µA, OVDD = VDD
l
4
V
VOL
Low Level Output Voltage
VDD = 4.75V, IO = 160µA, OVDD = VDD
VDD = 4.75V, IO = 1.6mA, OVDD = VDD
l
0.05
V
0.10
0.4
V
IOZ
Hi-Z Output Leakage
VOUT = 0V to VDD, RD = High
COZ
Hi-Z Output Capacitance
RD = High
l
±10
µA
15
pF
ISOURCE
ISINK
Output Source Current
Output Sink Current
VOUT = 0V
VOUT = VDD
–10
mA
10
mA
POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at TA = 25°C. (Note 5)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Positive Supply Voltage
(Notes 9 and 10)
4.75
5
5.25
V
Positive Supply Current
Nap Mode
Sleep Mode
CONVST = 0V or 5V
l
8
13
mA
5.5
8
mA
8
15
µA
Power Dissipation
Nap Mode
Sleep Mode
CONVST = 0V or 5V
40
mW
27.5
mW
40
µW
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For more information www.linear.com/LTC1857
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