Datasheet

LTC6406
3
6406fc
DC ELECTRICAL CHARACTERISTICS
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
= 1.25V, V
SHDN
= open,
R
BAL
= 100kΩ, R
I
= 150Ω, R
F
= 150Ω (0.1% resistors), C
F
= 1.8pF (see Figure 1) unless otherwise noted. V
S
is defi ned as (V
+
– V
–
).
V
OUTCM
is defi ned as (V
+OUT
+ V
–OUT
)/2. V
ICM
is defi ned as (V
+IN
+ V
–IN
)/2. V
OUTDIFF
is defi ned as (V
+OUT
– V
–OUT
).
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OSDIFF
Differential Offset Voltage (Input Referred) V
ICM
= 3V (Note 12)
V
ICM
= 1.25V
V
ICM
= 0V (Note 12)
l
l
l
±1
±0.25
±1
±5
±3.5
±5
mV
mV
mV
ΔV
OSDIFF
/ΔT
Differential Offset Voltage Drift (Input Referred) V
ICM
= 3V (Note 12)
V
ICM
= 1.25V
V
ICM
= 0V (Note 12)
l
l
l
12
1
7
μV/°C
μV/°C
μV/°C
I
B
Input Bias Current (Note 6) V
ICM
= 3V
V
ICM
= 1.25V
V
ICM
= 0V
l
–24
6
–9
–17
–1
μA
μA
μA
I
OS
Input Offset Current (Note 6) V
ICM
= 3V
V
ICM
= 1.25V
V
ICM
= 0V
l
±1
±1
±1
±3
μA
μA
μA
R
IN
Input Resistance Common Mode
Differential Mode
130
3
kΩ
kΩ
C
IN
Input Capacitance Differential 1 pF
e
n
Differential Input Referred Noise Voltage Density f = 1MHz, Not Including
R
I
/R
F
Noise
1.6 nV/√Hz
i
n
Input Noise Current Density f = 1MHz, Not Including
R
I
/R
F
Noise
2.5 pA/√Hz
e
nVOCM
Input Referred Common Mode Output Noise Voltage Density f = 1MHz 9 nV/√Hz
V
ICMR
(Note 7) Input Signal Common Mode Range Op Amp Inputs
l
V
–
V
+
V
CMRRI
(Note 8)
Input Common Mode Rejection Ratio
(Input Referred) ΔV
ICM
/ΔV
OSDIFF
V
ICM
from 0V to 3V
l
50 65 dB
CMRRIO
(Note 8)
Output Common Mode Rejection Ratio (Input Referred)
ΔV
OCM
/ΔV
OSDIFF
V
OCM
from 0.5V to 2V
l
50 70 dB
PSRR
(Note 9)
Differential Power Supply Rejection
(ΔV
S
/ΔV
OSDIFF
)
V
S
= 2.7V to 3.5V
l
55 75 dB
PSRRCM
(Note 9)
Output Common Mode Power Supply Rejection
(ΔV
S
/ΔV
OSCM
)
V
S
= 2.7V to 3.5V
l
55 65 dB
G
CM
Common Mode Gain (ΔV
OUTCM
/ΔV
OCM
)
V
OCM
from 0.5V to 2V
l
1V/V
ΔG
CM
Common Mode Gain Error 100 • (G
CM
– 1) V
OCM
from 0.5V to 2V
l
±0.4 ±0.8 %
BAL
Output Balance (ΔV
OUTCM
/ΔV
OUTDIFF
) ΔV
OUTDIFF
= 2V
Single-Ended Input
Differential Input
l
l
–57
–65
–45
–45
dB
dB
V
OSCM
Common Mode Offset Voltage (V
OUTCM
– V
OCM
)
l
±6 ±15 mV
ΔV
OSCM
/ΔT
Common Mode Offset Voltage Drift
l
15 μV/°C
V
OUTCMR
(Note 7)
Output Signal Common Mode Range
(Voltage Range for the V
OCM
Pin)
l
0.5 2 V
R
INVOCM
Input Resistance, V
OCM
Pin
l
12 18 24
kΩ
V
OCM
Self-Biased Voltage at the V
OCM
Pin V
OCM
= Open
l
1.15 1.25 1.35 V
V
OUT
Output Voltage, High, +OUT/–OUT Pins V
S
= 3.3V, I
L
= 0
V
S
= 3.3V, I
L
= –20mA
l
l
2.2
2
2.35
2.15
V
V
V
S
= 3V, I
L
= 0
V
S
= 3V, I
L
= –5mA
V
S
= 3V, I
L
= –20mA
l
l
l
2
1.95
1.7
2.05
2
1.85
V
V
V
Output Voltage, Low, +OUT/–OUT Pins V
S
= 3V, I
L
= 0
V
S
= 3V, I
L
= 5mA
V
S
= 3V, I
L
= 20mA
l
l
l
0.23
0.34
0.75
0.33
0.4
0.85
V
V
V