Datasheet

LT1994
4
1994fb
SYMBOL PARAMETER CONDITIONS
C/I GRADES H/MP GRADES
UNITSMIN TYP MAX MIN TYP MAX
ΔV
OSCM
/ΔT
Common Mode Offset Voltage Drift V
S
= 2.375V, V
ICM
= V
S
/4
V
S
= 3V
V
S
= 5V
V
S
= ±5V
5
5
5
5
5
5
5
5
V/°C
V/°C
V/°C
V/°C
V
OUTCMR
(Note 7)
Output Signal Common Mode Range
(Voltage Range for the V
OCM
Pin)
V
S
= 3V, ±5V
l
V
–
+
1.1
V
+
– 0.8
V
–
+
1.1
V
+
– 0.8
V
R
INVOCM
Input Resistance, V
OCM
Pin
l
30 40 60 30 40 60
kΩ
V
MID
Voltage at the V
OCM
Pin V
S
= 5V
l
2.45 2.5 2.55 2.45 2.5 2.55 V
V
OUT
Output Voltage, High, Either Output Pin
(Note 10)
V
S
= 3V, No Load
V
S
= 3V, R
L
= 800Ω
V
S
= 3V, R
L
= 100Ω
l
l
l
70
90
200
140
175
400
70
90
200
140
175
400
mV
mV
mV
V
S
= ±5V, No Load
V
S
= ±5V, R
L
= 800Ω
V
S
= ±5V, R
L
= 100Ω
l
l
l
150
200
900
325
450
2400
150
200
900
325
450
2400
mV
mV
mV
Output Voltage, Low, Either Output Pin
(Note 10)
V
S
= 3V, No Load
V
S
= 3V, R
L
= 800Ω
V
S
= 3V, R
L
= 100Ω
l
l
l
30
50
125
70
90
250
30
50
125
70
90
250
mV
mV
mV
V
S
= ±5V, No Load
V
S
= ±5V, R
L
= 800Ω
V
S
= ±5V, R
L
= 100Ω
l
l
l
80
125
900
180
250
2400
80
125
900
180
250
2400
mV
mV
mV
I
SC
Output Short-Circuit Current, Either
Output Pin (Note 11)
V
S
= 2.375V, R
L
= 10Ω
V
S
= 3V, R
L
= 10Ω
V
S
= 5V, R
L
= 10Ω
V
S
= ±5V, V
CM
= 0V, R
L
= 10Ω
l
l
l
l
±25
±30
±40
±45
±35
±40
±65
±85
±10
±15
±40
±45
±35
±40
±65
±85
mA
mA
mA
mA
SR Slew Rate
V
S
= 5V, ΔV
OUT
+
= –ΔV
OUT
–
= 1V
V
S
= ±5V, V
CM
= 0V,
ΔV
OUT
+
= –ΔV
OUT
–
= 1.8V
l
l
50
50
65
65
85
85
50
50
65
65
85
85
V/S
V/S
GBW Gain-Bandwidth Product
(f
TEST
= 1MHz)
V
S
= 3V, T
A
= 25°C
V
S
= ±5V, V
CM
= 0V, T
A
= 25°C
l
l
58
58
70
70
58
58
70
70
MHz
MHz
Distortion
V
S
= 3V, R
L
= 800Ω, f
IN
= 1MHz,
V
OUT
+
– V
OUT
–
= 2V
P-P
Differential Input
2nd Harmonic
3rd Harmonic
Single-Ended Input
2nd Harmonic
3rd Harmonic
–99
–96
–94
–108
–99
–96
–94
–108
dBc
dBc
dBc
dBc
t
S
Settling Time V
S
= 3V, 0.01%, 2V Step
V
S
= 3V, 0.1%, 2V Step
120
90
120
90
ns
ns
A
VOL
Large-Signal Voltage Gain V
S
= 3V 100 100 dB
V
S
Supply Voltage Range
l
2.375 12.6 2.375 12.6 V
I
S
Supply Current V
S
= 3V
V
S
= 5V
V
S
= ±5V
l
l
l
13.3
13.9
14.8
18.5
19.5
20.5
13.3
13.9
14.8
20.0
20.5
21.5
mA
mA
mA
I
SHDN
Supply Current in Shutdown V
S
= 3V
V
S
= 5V
V
S
= ±5V
l
l
l
0.225
0.375
0.7
0.8
1.75
2.5
0.225
0.375
0.7
0.8
1.75
2.5
mA
mA
mA
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
= mid-supply, V
SHDN
= OPEN,
R
I
= R
F
= 499Ω, R
L
= 800Ω to a mid-supply voltage (See Figure 1) unless otherwise noted. V
S
is defi ned (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
–
). V
INDIFF
is defi ned as (V
IN
+
– V
IN
–
).