5
LT1398/LT1399/LT1399HV
sn13989 13989fas
The ● denotes specifications which apply over the specified operating temperature range, otherwise specifications are at T
A
= 25°C.
For each amplifier: V
CM
= 0V, V
S
= ±7.5V, EN = 0V, pulse tested, unless otherwise noted. (Note 4)
E
LECTR
IC
AL C CHARA TERIST
ICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SR Slew Rate (Note 6) A
V
= 10, R
L
= 150Ω, V
S
= ±5V 500 800 V/µs
t
ON
Turn-On Delay Time (Note 7) R
F
= R
G
= 324Ω, R
L
= 100Ω, V
S
= ±5V 30 75 ns
t
OFF
Turn-Off Delay Time (Note 7) R
F
= R
G
= 324Ω, R
L
= 100Ω, V
S
= ±5V 40 100 ns
t
r
, t
f
Small-Signal Rise and Fall Time R
F
= R
G
= 324Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
, 1.3 ns
V
S
= ±5V
t
PD
Propagation Delay R
F
= R
G
= 324Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
, 2.5 ns
V
S
= ±5V
os Small-Signal Overshoot R
F
= R
G
= 324Ω, R
L
= 100Ω, V
OUT
= 1V
P-P
,10%
V
S
= ±5V
t
S
Settling Time 0.1%, A
V
= –1V, R
F
= R
G
= 309Ω, R
L
= 150Ω,25ns
V
S
= ±5V
dG Differential Gain (Note 8) R
F
= R
G
= 324Ω, R
L
= 150Ω, V
S
= ±5V 0.13 %
dP Differential Phase (Note 8) R
F
= R
G
= 324Ω, R
L
= 150Ω, V
S
= ±5V 0.10 DEG
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: This parameter is guaranteed to meet specified 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 amplifiers have their outputs short circuited.
Note 4: The LT1398C/LT1399C/LT1399HVC are guaranteed to meet
specified performance from 0°C to 70°C and are designed, characterized
and expected to meet these extended temperature limits, but are not tested
or QA sampled at –40°C and 85°C. The LT1399I is guaranteed to meet
specified performance from –40°C to 85°C.
Note 5: T
J
is calculated from the ambient temperature T
A
and the
power dissipation P
D
according to the following formula:
LT1398CS, LT1399CS, LT1399IS, LT1399HVCS:
T
J
= T
A
+ (P
D
• 100°C/W)
LT1399CGN, LT1399IGN: T
J
= T
A
+ (P
D
• 120°C/W)
Note 6: Slew rate is measured at ±2V on a ±3V output signal.
Note 7: Turn-on delay time (t
ON
) is measured from control input to
appearance of 1V at the output, for V
IN
= 1V. Likewise, turn-off delay
time (t
OFF
) is measured from control input to appearance of 0.5V on
the output for V
IN
= 0.5V. This specification is guaranteed by design
and characterization.
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 amplifier stages were cascaded giving an effective
resolution of 0.01% and 0.01°.
Note 9: The LT1398C, LT1398I, LT1399C, LT1399I, LT1399HVC and
LT1399HVI are guaranteed functional over the operating temperature
range of –40°C to 85°C.
SMALL SIGNAL SMALL SIGNAL SMALL SIGNAL
V
S
(V) A
V
R
L
(Ω)R
F
(Ω)R
G
(Ω) –3dB BW (MHz) 0.1dB BW (MHz) PEAKING (dB)
±5 1 100 365 – 300 150 0.05
±5 2 100 324 324 300 150 0
±5 –1 100 309 309 300 150 0
TYPICAL AC PERFOR A CE
W
U
(LT1399HV)
