Datasheet

3
LTC2404/LTC2408
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input Voltage Range (Note 14) ● –0.125 • V
REF
1.125 • V
REF
V
V
REF
Reference Voltage Range ● 0.1 V
CC
V
C
S(IN)
Input Sampling Capacitance 10 pF
C
S(REF)
Reference Sampling Capacitance 15 pF
I
IN(LEAK)
Input Leakage Current CS = V
CC
● –10 1 10 nA
I
REF(LEAK)
Reference Leakage Current V
REF
= 2.5V, CS = V
CC
● –12 1 12 nA
I
IN(MUX)
On Channel Leakage Current V
S
= 2.5V (Note 15) ● ±20 nA
R
ON
MUX On-Resistance I
OUT
= 1mA, V
CC
= 2.7V ● 250 300 Ω
I
OUT
= 1mA, V
CC
= 5V ● 120 250 Ω
MUX ∆R
ON
vs Temperature 0.5 %/°C
∆R
ON
vs V
S
(Note 15) 20 %
I
S(OFF)
MUX Off Input Leakage Channel Off, V
S
= 2.5V ● ±20 nA
I
D(OFF)
MUX Off Output Leakage Channel Off, V
D
= 2.5V ● ±20 nA
t
OPEN
MUX Break-Before-Make Interval 290 ns
t
ON
Enable Turn-On Time V
S
= 1.5V, R
L
= 3.4k, C
L
= 15pF 490 ns
t
OFF
Enable Turn-Off Time V
S
= 1.5V, R
L
= 3.4k, C
L
= 15pF 190 ns
QIRR MUX Off Isolation V
IN
= 2V
P-P
, R
L
= 1k, f = 100kHz 70 dB
QINJ Charge Injection R
S
= 0Ω, C
L
= 1000pF, V
S
= 1V ±1pC
C
S(OFF)
Input Off Capacitance (MUX) 10 pF
C
D(OFF)
Output Off Capacitance (MUX) 10 pF
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
A ALOG I PUT A D REFERE CE
UU
U
U
PARAMETER CONDITIONS MIN TYP MAX UNITS
Normal Mode Rejection 50Hz ±2% (Note 8) ● 110 130 dB
Power Supply Rejection DC V
REF
= 2.5V, V
IN
= 0V 100 dB
Power Supply Rejection 60Hz ±2% V
REF
= 2.5V, V
IN
= 0V, (Note 7) 110 dB
Power Supply Rejection 50Hz ±2% V
REF
= 2.5V, V
IN
= 0V, (Note 8) 110 dB
The ● denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Notes 3, 4)
CONVERTER CHARACTERISTICS
U