LT1395/LT1396/LT1397
5
139567fd
ELECTRICAL CHARACTERISTICS
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: This parameter is guaranteed to meet specifi ed performance
through design and characterization. It has not been tested.
Note 3: A heat sink may be required depending on the power supply
voltage and how many amplifi ers have their outputs short circuited.
The θ
JA
specifi ed for the DD package is with minimal PCB heat spreading
metal. Using expanded metal area on all layers of a board reduces
this value.
Note 4: The LT1395C/LT1396C/LT1397C are guaranteed functional over the
operating temperature range of –40°C to 85°C. The LT1397H is guaranteed
functional over the operating temperature range of –40°C to 125°C.
Note 5: The LT1395C/LT1396C/LT1397C are guaranteed to meet specifi ed
performance from 0°C to 70°C. The LT1395C/LT1396C/LT1397C are
designed, characterized and expected to meet specifi ed performance from
–40°C and 85°C but are not tested or QA sampled at these temperatures.
The LT1397H is guaranteed to meet specifi ed performance from –40°C to
125°C. For guaranteed I-grade parts, consult the factory.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
ON
Turn-On Delay Time (Note 9) R
F
= R
G
= 255Ω, R
L
= 100Ω, (LT1395CS6 only) 30 75 ns
t
OFF
Turn-Off Delay Time (Note 9) R
F
= R
G
= 255Ω, R
L
= 100Ω, (LT1395CS6 only) 40 100 ns
–3dB BW –3dB Bandwidth A
V
= 1, R
F
= 374Ω, R
L
= 100Ω
A
V
= 2, R
F
= R
G
=
255Ω, R
L
= 100Ω
400
350
MHz
MHz
0.1dB BW 0.1dB Bandwidth A
V
= 1, R
F
= 374Ω, R
L
= 100Ω
A
V
= 2, R
F
= R
G
=
255Ω, R
L
= 100Ω
100
100
MHz
MHz
t
r
, t
f
Small-Signal Rise and Fall Time R
F
= R
G
= 255Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
1.3 ns
t
PD
Propagation Delay R
F
= R
G
= 255Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
2.5 ns
os Small-Signal Overshoot R
F
= R
G
= 255Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
10 %
t
S
Settling Time 0.1%, A
V
= –1, R
F
= R
G
= 280Ω, R
L
= 150Ω 25 ns
dG Differential Gain (Note 8) R
F
= R
G
= 255Ω, R
L
= 150Ω 0.02 %
dP Differential Phase (Note 8) R
F
= R
G
= 255Ω, R
L
= 150Ω 0.04 DEG
Note 6:
T
J
is calculated from the ambient temperature T
A
and the power
dissipation P
D
according to the following formula:
LT1395CS5: T
J
= T
A
+ (P
D
• 250°C/W)
LT1396CS6: T
J
= T
A
+ (P
D
• 230°C/W)
LT1395CS8: T
J
= T
A
+ (P
D
• 150°C/W)
LT1396CS8: T
J
= T
A
+ (P
D
• 150°C/W)
LT1396CMS8: T
J
= T
A
+ (P
D
• 250°C/W)
LT1396CDD: T
J
= T
A
+ (P
D
• 160°C/W)
LT1397CS14: T
J
= T
A
+ (P
D
• 100°C/W)
LT1397CGN16: T
J
= T
A
+ (P
D
• 135°C/W)
LT1397CDE: T
J
= T
A
+ (P
D
• 43°C/W)
LT1397HDE: T
J
= T
A
+ (P
D
• 43°C/W)
Note 7:
Slew rate is measured at ±2V on a ±3V output signal.
Note 8: Differential gain and phase are measured using a Tektronix
TSG120YC/NTSC signal generator and a Tektronix 1780R Video
Measurement Set. The resolution of this equipment is 0.1% and 0.1°.
Ten identical amplifi er stages were cascaded giving an effective resolution
of 0.01% and 0.01°.
Note 9:
For LT1395CS6, turn-on delay time (t
ON
) is measured from control
input to appearance of 1V(50%) at the output, for V
IN
= 1V and A
V
= 2.
Likewise, turn-off delay time (t
OFF
) is measured from control input to
appearance of 1V(50%) on the output for V
IN
= 1V and A
V
= 2.
This specifi cation is guaranteed by design and characterization.
The ● denotes specifi cations which apply over the specifi ed operating temperature range, otherwise specifi cations are at T
A
= 25°C.
For each amplifi er: V
CM
= 0V, V
S
= ±5V, pulse tested, unless otherwise noted. (Note 5)
