LT1994 Linear Technology, LT1994 Datasheet - Page 4

• Manufacturer Part Number: LT1994
• Description: Low Noise - Low Distortion Fully Differential Input/Output Amplifier/Driver
• Manufacturer: Linear Technology

LT1994
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifi cations are at T
R
as (V
SYMBOL
I
SR
GBW
t
A
V
I
I
V
V
R
t
t
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The inputs are protected by a pair of back-to-back diodes. If the
differential input voltage exceeds 1V, the input current should be limited to
less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below the absolute maximum rating when the output is shorted
indefi nitely.
4
SC
S
S
⎯ S ⎯ H ⎯ D ⎯ N
ON
OFF
VOL
S
IL
IH
⎯ S ⎯ H ⎯ D ⎯ N
I
= R
OUT
F
= 499Ω, R
+
+ V
OUT
–
)/2. V
L
PARAMETER
Output Voltage, Low, Either Output Pin
(Note 10)
Output Short-Circuit Current, Either
Output Pin (Note 11)
Slew Rate
Gain-Bandwidth Product
(f
Distortion
Settling Time
Large-Signal Voltage Gain
Supply Voltage Range
Supply Current
Supply Current in Shutdown
⎯ S ⎯ H ⎯ D ⎯ N Input Logic Low
⎯ S ⎯ H ⎯ D ⎯ N Input Logic High
⎯ S ⎯ H ⎯ D ⎯ N Pull-Up Resistor
Turn-On Time
Turn-Off Time
= 800Ω to a mid-supply voltage (See Figure 1) unless otherwise noted. V
TEST
ICM
= 1MHz)
is defi ned as (V
IN
+
+ V
IN
–
)/2. V
A
= 25°C. V
CONDITIONS
V
V
V
V
V
V
V
V
V
V
V
V
ΔV
V
V
V
V
Differential Input
Single-Ended Input
V
V
V
V
V
V
V
V
V
V
V
V
V
V
OUTDIFF
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
OUT
S
S
S
S
S
S
S
S
S
S
S
S
⎯ S ⎯ H ⎯ D ⎯ N
⎯ S ⎯ H ⎯ D ⎯ N
OUT
= 3V, No Load
= 3V, R
= 3V, R
= ±5V, No Load
= ±5V, R
= ±5V, R
= 2.375V, R
= 3V, R
= 5V, R
= ±5V, V
= 5V, ΔV
= ±5V, V
= 3V, T
= ±5V, V
= 3V, R
= 3V, 0.01%, 2V Step
= 3V, 0.1%, 2V Step
= 3V
= 3V
= 5V
= ±5V
= 3V
= 5V
= ±5V
= 3V to ±5V
= 3V to ±5V
= 2.375V to ±5V
The
2nd Harmonic
3rd Harmonic
2nd Harmonic
3rd Harmonic
+
+
– V
0.5V to 3V
3V to 0.5V
= –ΔV
●
+
A
OUT
L
L
L
L
L
is defi ned as (V
= 3V, V
denotes the specifi cations which apply over the full operating
CM
CM
CM
L
L
OUT
= 25°C
= 800Ω
= 100Ω
= 10Ω
= 10Ω
= 800Ω, f
= 800Ω
= 100Ω
–
OUT
L
= 0V,
= 0V, R
= 0V, T
= 2V
+
Note 4: The LT1994C/LT1994I are guaranteed functional over the operating
temperature range –40°C to 85°C.
Note 5: The LT1994C is guaranteed to meet specifi ed performance from
0°C to 70°C. The LT1994C is designed, characterized, and expected to
meet specifi ed performance from –40°C to 85°C but is not tested or
QA sampled at these temperatures. The LT1994I is guaranteed to meet
specifi ed performance from –40°C to 85°C.
Note 6: Input bias current is defi ned as the average of the input currents
fl owing into Pin 1 and Pin 8 (IN
as the difference of the input currents fl owing into Pin 8 and Pin 1
(I
= 10Ω
= –ΔV
–
OS
= 1.8V
–
P-P
= 0V, V
= I
A
IN
L
OUT
B
= 25°C
= 10Ω
= 1MHz,
+
– I
–
= 1V
OUT
B
CM
–
).
+
= V
– V
OCM
OUT
= V
–
S
). V
is defi ned (V
ICM
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
INDIFF
–
= mid-supply, V
and IN
V
2.375
+
MIN
±25
±30
±40
±45
50
50
58
58
40
– 0.6
is defi ned as (V
+
). Input Offset current is defi ned
+
www.DataSheet4U.com
– V
0.225
0.375
–108
13.3
13.9
14.8
TYP
125
125
900
±35
±40
±65
±85
–99
–96
–94
120
100
0.7
30
50
80
65
65
70
70
90
55
–
1
1
). V
⎯ S ⎯ H ⎯ D ⎯ N
OUTCM
IN
V
= OPEN,
+
+
2400
MAX
12.6
18.5
19.5
20.5
1.75
250
180
250
0.8
2.5
70
90
85
85
75
– 2.1
– V
is defi ned
IN
–
).
UNITS
1994fa
V/μS
V/μS
MHz
MHz
dBc
dBc
dBc
dBc
mV
mV
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
kΩ
dB
ns
ns
μs
μs
V
V
V