LTC2230/LTC2231
4
22301fb
DIGITAL I PUTS A D DIGITAL OUTPUTS
U
The
● denotes the specifications which apply over the
full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4)
I TER AL REFERE CE CHARACTERISTICS
UU
U
(Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCM Output Voltage
IOUT = 0
1.570
1.600
1.630
V
VCM Output Tempco
±25
ppm/
°C
VCM Line Regulation
3.1V < VDD < 3.5V
3
mV/V
VCM Output Resistance
–1mA < IOUT < 1mA
4
Ω
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ENCODE INPUTS (ENC+, ENC–)
VID
Differential Input Voltage
●
0.2
V
VICM
Common Mode Input Voltage
Internally Set
1.6
V
Externally Set (Note 7)
●
1.1
1.6
2.5
V
RIN
Input Resistance
6k
Ω
CIN
Input Capacitance
(Note 7)
3
pF
LOGIC INPUTS (OE, SHDN)
VIH
High Level Input Voltage
VDD = 3.3V
●
2V
VIL
Low Level Input Voltage
VDD = 3.3V
●
0.8
V
IIN
Input Current
VIN = 0V to VDD
●
–10
10
μA
CIN
Input Capacitance
(Note 7)
3
pF
LOGIC OUTPUTS (CMOS MODE)
OVDD = 3.3V
COZ
Hi-Z Output Capacitance
OE = High (Note 7)
3
pF
ISOURCE
Output Source Current
VOUT = 0V
50
mA
ISINK
Output Sink Current
VOUT = 3.3V
50
mA
VOH
High Level Output Voltage
IO = –10μA
3.295
V
IO = –200μA
●
3.1
3.29
V
VOL
Low Level Output Voltage
IO = 10μA
0.005
V
IO = 1.6mA
●
0.09
0.4
V
OVDD = 2.5V
VOH
High Level Output Voltage
IO = –200μA
2.49
V
VOL
Low Level Output Voltage
IO = 1.6mA
0.09
V
OVDD = 1.8V
VOH
High Level Output Voltage
IO = –200μA
1.79
V
VOL
Low Level Output Voltage
IO = 1.6mA
0.09
V
LOGIC OUTPUTS (LVDS MODE)
VOD
Differential Output Voltage
100
Ω Differential Load
●
247
350
454
mV
VOS
Output Common Mode Voltage
100
Ω Differential Load
●
1.125
1.250
1.375
V