Datasheet

LTC1852/LTC1853
4
18523fa
INTERNAL REFERENCE
T
A
= 25°C. (Notes 5, 6)
PARAMETER CONDITIONS MIN TYP MAX UNITS
REFOUT Output Voltage I
OUT
= 0 2.48 2.50 2.52 V
REFOUT Output Temperature Coeffi cient I
OUT
= 0 ±15 ppm/°C
REFOUT Line Regulation 2.7 ≤ V
DD
≤ 5.5, I
OUT
= 0 0.01 LSB/V
Reference Buffer Gain 1.6368 1.6384 1.6400 V/V
REFCOMP Output Voltage External 2.5V Reference (V
DD
= 5V)
Internal 2.5V Reference (V
DD
= 5V)
4.092
4.060
4.096
4.096
4.100
4.132
V
V
REFCOMP Impedance Impedance to GND, REFIN = V
DD
19.2 kΩ
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 5.25V
●
2.4 V
V
IL
Low Level Input Voltage V
DD
= 4.75V
●
0.8 V
I
IN
Digital Input Current V
IN
= 0V to V
DD
●
±5 μA
C
IN
Digital Input Capacitance 1.5 pF
V
OH
High Level Output Voltage V
DD
= 4.75V, I
O
= –10μA
V
DD
= 4.75V, I
O
= –200μA
●
4
4.5 V
V
V
OL
Low Level Output Voltage V
DD
= 4.75V, I
O
= 160μA
V
DD
= 4.75V, I
O
= 1.6mA
●
0.5
0.10 0.4
V
V
I
OZ
Hi-Z Output Leakage D11 to D0, A0, A1, A2
OUT
, DIFF
OUT
V
OUT
= 0V to V
DD
, CS High
●
±10 μA
C
OZ
Hi-Z Capacitance D11 to D0 CS High (Note 9)
●
15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –20 mA
I
SINK
Output Sink Current V
OUT
= V
DD
30 mA
DIGITAL INPUTS AND DIGITAL OUTPUTS
The ● denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 5V (Note 5)
DIGITAL INPUTS AND DIGITAL OUTPUTS
The ● denotes the specifi cations which apply over the full
operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 5V (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IH
High Level Input Voltage V
DD
= 3.3V
●
1.9 V
V
IL
Low Level Input Voltage V
DD
= 2.7V
●
0.45 V
I
IN
Digital Input Current V
IN
= 0V to V
DD
●
±5 μA
C
IN
Digital Input Capacitance 1.5 pF
V
OH
High Level Output Voltage V
DD
= 2.7V, I
O
= –10μA
V
DD
= 2.7V, I
O
= –200μA
●
2
2.5 V
V
V
OL
Low Level Output Voltage V
DD
= 2.7V, I
O
= 160μA
V
DD
= 2.7V, I
O
= 1.6mA
●
0.05
0.10 0.4
V
V
I
OZ
Hi-Z Output Leakage D11 to D0, A0, A1, A2
OUT
, DIFF
OUT
V
OUT
= 0V to V
DD
, CS High
●
±10 μA
C
OZ
Hi-Z Capacitance D11 to D0 CS High (Note 9)
●
15 pF
I
SOURCE
Output Source Current V
OUT
= 0V –10 mA
I
SINK
Output Sink Current V
OUT
= V
DD
15 mA