4
LT1259/LT1260
T
he ● denotes specifications which apply over the specified operating
temperature range.
Note 1: A heat sink may be required depending on the power supply
voltage and how many amplifiers have their outputs short circuited.
Note 2: Commercial grade parts are designed to operate over the
temperature range of –40°C to 85°C but are neither tested nor guaranteed
beyond 0°C to 70°C. Industrial grade parts specified and tested over
–40°C to 85°C are available on special request. Consult factory.
Note 3: Ground pins are not internally connected. For best
performance, connect to ground.
Note 4: T
J
is calculated from the ambient temperature T
A
and the
power dissipation P
D
according to the following formulas:
LT1259CN/LT1259IN: T
J
= T
A
+ (P
D
• 70°C/W)
LT1259CS/LT1259IS: T
J
= T
A
+ (P
D
• 110°C/W)
LT1260CNLT1260IN/: T
J
= T
A
+ (P
D
• 70°C/W)
LT1260CS/LT1260IS: T
J
= T
A
+ (P
D
• 100°C/W)
Note 5: The supply current of the LT1259/LT1260 has a negative
temperature coefficient. See Typical Performance Characteristics.
Note 6: Slew rate is measured at ±5V on a ±10V output signal while
operating on ±15V supplies with R
F
= 1k, R
G
= 110Ω and R
L
= 1k.
Note 7: Turn-on delay time is measured while operating on ±5V
supplies with R
F
= 1k, R
G
= 110Ω and R
L
= 150Ω. The t
ON
is measured
from control input to appearance of 0.5V at the output, for V
IN
= 0.1V.
Likewise, turn-off delay time is measured from control input to
appearance of 0.5V on the output for V
IN
= 0.1V.
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°.
Six identical amplifier stages were cascaded giving an effective
resolution of 0.016% and 0.016°.
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)
±12 2 150 1.5k 1.5k 130 53 0.1
±5 2 150 1.1k 1.1k 93 40 0
±12 10 150 1.1k 121 69 20 0.13
±5 10 150 825 90.9 61 16 0
±12V Frequency Response, A
V
= 2
FREQUENCY (MHz)
1
2
GAIN (dB)
4
6
8
10
10 100
LT1259/60 • TPC01
3
5
7
9
11
12
–200
–160
–120
–80
–40
–180
–140
–100
–60
0
PHASE (DEG)
PHASE
GAIN
V
S
= ±12V
R
L
= 150Ω
R
F
= R
G
= 1.5k
–20
FREQUENCY (MHz)
1
16
GAIN (dB)
18
20
22
24
10 100
LT1259/60 • TPC01
17
19
21
23
25
26
–200
–160
–120
–80
–40
–180
–140
–100
–60
0
PHASE (DEG)
PHASE
GAIN
V
S
= ±12V
R
L
= 150Ω
R
F
= 1.1k
R
G
= 121Ω
–20
±12V Frequency Response, A
V
= 10
ELECTRICAL CHARACTERISTICS
WU
TYPICAL AC PERFOR A CE
TYPICAL PERFOR A CE CHARACTERISTICS
UW
