Datasheet

LTC2302/LTC2306
3
23026fa
CONVERTER AND MULTIPLEXER CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
+
Absolute Input Range (CH0, CH1, IN
+
) (Note 9)
l
–0.05 REFCOMP V
V
IN
–
Absolute Input Range (CH0, CH1, IN
–
) Unipolar (Note 9)
Bipolar (Note 9)
l
l
–0.05
–0.05
0.25 • REFCOMP
0.75 • REFCOMP
V
V
V
IN
+
– V
IN
–
Input Differential Voltage Range V
IN
= V
IN
+
– V
IN
–
(Unipolar)
V
IN
= V
IN
+
– V
IN
–
(Bipolar)
l
l
0 to V
REF
±V
REF
/2
V
V
I
IN
Analog Input Leakage Current
l
±1 µA
C
IN
Analog Input Capacitance Sample Mode
Hold Mode
55
5
pF
pF
CMRR Input Common Mode Rejection Ratio 70 dB
The l denotes the specifi cations
which apply over the full operating temperature range, otherwise specifi cations are at T
A
= 25°C. (Notes 4, 5)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes)
l
12 Bits
Integral Linearity Error (Note 6)
l
±0.3 ±1 LSB
Differential Linearity Error
l
±0.25 ±1 LSB
Bipolar Zero Error (Note 7)
l
±1 ±6 LSB
Bipolar Zero Error Drift 0.002 LSB/°C
Unipolar Zero Error (Note 7)
l
±1 ±6 LSB
Unipolar Zero Error Drift 0.002 LSB/°C
Unipolar Zero Error Match (LTC2306) ±0.3 ±3 LSB
Bipolar Full-Scale Error (Note 8)
l
±1.5 ±8 LSB
Bipolar Full-Scale Error Drift 0.05 LSB/°C
Unipolar Full-Scale Error (Note 8)
l
±1.2 ±6 LSB
Unipolar Full-Scale Error Drift 0.05 LSB/°C
Unipolar Full-Scale Error Match (LTC2306) ±0.3 ±3 LSB
ANALOG INPUT
The l denotes the specifi cations which apply over the full operating temperature range, otherwise
specifi cations are at T
A
= 25°C. (Note 4)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
REF
Input Range
l
0.1 V
DD
V
I
REF
Reference Input Current f
SMPL
= 0ksps, V
REF
= 4.096V
f
SMPL
= 500ksps, V
REF
= 4.096V
l
l
50
230
80
260
µA
µA
C
REF
Reference Input Capacitance 55 pF
REFERENCE INPUT
The l denotes the specifi cations which apply over the full operating temperature range,
otherwise specifi cations are at T
A
= 25°C. (Note 4)