Datasheet

LTC6404
3
6404f
The l denotes the specifi cations which apply over
the full operating temperature range, otherwise specifi cations are at T
A
= 25°C. V
+
= 3V, V
–
= 0V, V
CM
= V
OCM
= V
ICM
= Mid-Supply,
V
SHDN
= OPEN, R
L
= OPEN, R
BAL
= 100k (See Figure 1). For the LTC6404-1: R
I
= 100Ω, R
F
= 100Ω. For the LTC6404-2: R
I
= 100Ω,
R
F
= 200Ω. For the LTC6404-4: R
I
= 100Ω, R
F
= 402Ω, unless otherwise noted. V
S
is defi ned (V
+
– V
–
). V
OUTCM
= (V
OUT
+
+ V
OUT
–
)/2.
V
ICM
is defi ned (V
IN
+
+ V
IN
–
)/2. V
OUTDIFF
is defi ned (V
OUT
+
– V
OUT
–
). V
INDIFF
= (V
INP
– V
INM
)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OSDIFF
Differential Offset Voltage (Input Referred) V
S
= 2.7V to 5.25V
l
±0.5 ±2 mV
ΔV
OSDIFF
/ΔT
Differential Offset Voltage Drift (Input Referred) V
S
= 2.7V to 5.25V 1 µV/°C
I
B
Input Bias Current (Note 6) V
S
= 2.7V to 5.25V
l
–60 –23 0 µA
ΔI
B
/ΔT
Input Bias Current Drift (Note 6) V
S
= 2.7V to 5.25V 0.01 µA/°C
I
OS
Input Offset Current (Note 6) V
S
= 2.7V to 5.25V
l
±1 ±10 µA
R
IN
Input Resistance Common Mode
Differential Mode
1000
3
k
k
C
IN
Input Capacitance 1pF
e
n
Differential Input Referred Noise Voltage Density f = 1MHz 1.5 nV/√Hz
i
n
Input Noise Current Density f = 1MHz 3 pA/√Hz
e
nVOCM
Input Referred Common Mode Noise Voltage
Density
f = 1MHz, Referred to V
OCM
Pin
LTC6404-1
LTC6404-2
LTC6404-4
9
10.5
27
nV/√Hz
nV/√Hz
nV/√Hz
V
ICMR
(Note 7)
Input Signal Common Mode Range V
S
= 3V
V
S
= 5V
l
l
0
0
1.6
3.6
V
V
CMRRI
(Note 8)
Input Common Mode Rejection Ratio
(Input Referred) ΔV
ICM
/ΔV
OSDIFF
V
S
= 3V, ΔV
CM
= 0.75V
V
S
= 5V, ΔV
CM
= 1.25V
60
60
dB
dB
CMRRIO
(Note 8)
Output Common Mode Rejection Ratio
(Input Referred) ΔV
OCM
/ΔV
OSDIFF
V
S
= 5V, ΔV
OCM
= 1V
66 dB
PSRR
(Note 9)
Differential Power Supply Rejection
(ΔV
S
/ΔV
OSDIFF
)
V
S
= 2.7V to 5.25V
l
60 94 dB
PSRRCM
(Note 9)
Output Common Mode Power Supply Rejection
(ΔV
S
/ΔV
OSCM
)
V
S
= 2.7V to 5.25V
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
50
50
40
63
63
51
dB
dB
dB
G
CM
Common Mode Gain (ΔV
OUTCM
/ΔV
OCM
)V
S
= 5V, ΔV
OCM
= 1V
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
1
1
0.99
V/V
V/V
V/V
Common Mode Gain Error
V
S
= 5V, ΔV
OCM
= 1V
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
–0.6
–0.6
–1.6
–0.125
–0.25
–1
0.1
0.1
–0.4
%
%
%
BAL
Output Balance (ΔV
OUTCM
/ΔV
OUTDIFF
) ΔV
OUTDIFF
= 2V, Single-Ended Input
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
–60
–60
–53
–40
–40
–40
dB
dB
dB
ΔV
OUTDIFF
= 2V, Differential Input
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
–66
–66
–66
–40
–40
–40
dB
dB
dB
V
OSCM
Common Mode Offset Voltage (V
OUTCM
– V
OCM
)V
S
= 2.7V to 5.25V
LTC6404-1
LTC6404-2
LTC6404-4
l
l
l
±10
±20
±40
±25
±50
±100
mV
mV
mV
LTC6404 DC ELECTRICAL CHARACTERISTICS