lt6600cs8-2.5-pbf Linear Technology Corporation, lt6600cs8-2.5-pbf Datasheet - Page 11

• Manufacturer Part Number: lt6600cs8-2.5-pbf
• Description: Very Low Noise, Differential Amplifier And 15mhz Lowpass Filter
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTIO
Junction temperature, T
temperature, T
dissipation is the product of supply voltage, V
supply current, I
given by:
where the supply current, I
load impedance, temperature and common mode
voltages.
Table 2. LT6600-15 SO-8 Package Thermal Resistance
APPLICATIO S I FOR ATIO
TOPSIDE
(mm
1100
T
330
COPPER AREA
35
35
0
J
= T
2
)
A
BACKSIDE
+ (P
(mm
1100
330
35
0
0
D
A
2
)
, and power dissipation, P
S
• θ
. Therefore, the junction temperature is
JA
U
BOARD AREA
) = T
.030 ±.005
(mm
2500
2500
2500
2500
2500
J
(0.203 – 0.254)
, is calculated from the ambient
.008 – .010
A
U
TYP
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
.245
S
MIN
2
RECOMMENDED SOLDER PAD LAYOUT
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
+ (V
)
, is a function of signal level,
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
(0.254 – 0.508)
S
.010 – .020
.050 BSC
• I
(JUNCTION-TO-AMBIENT)
THERMAL RESISTANCE
W
S
U
(0.406 – 1.270)
(MILLIMETERS)
8-Lead Plastic Small Outline (Narrow .150 Inch)
• θ
.016 – .050
INCHES
JA
× 45°
100°C/W
105°C/W
65°C/W
85°C/W
95°C/W
)
D
. The power
(Reference LTC DWG # 05-08-1610)
.045 ±.005
U
.160 ±.005
S
0°– 8° TYP
, and
S8 Package
(5.791 – 6.197)
.228 – .244
For a given supply voltage, the worst-case power dissi-
pation occurs when the differential input signal is maxi-
mum, the common mode currents are maximum (see
Applications Information regarding common mode DC
currents), the load impedance is small and the ambient
temperature is maximum. To compute the junction tem-
perature, measure the supply current under these worst-
case conditions, estimate the thermal resistance from
Table 2, then apply the equation for T
the circuit in Figure 3 with a DC differential input voltage
of 250mV, a differential output voltage of 1V, no load
resistance and an ambient temperature of 85°C, the
supply current (current into Pin 3) measures 50mA.
Assuming a PC board layout with a 35mm
the θ
When using higher supply voltages or when driving small
impedances, more copper may be necessary to keep T
below 150°C.
(1.346 – 1.752)
(0.355 – 0.483)
.053 – .069
.014 – .019
T
J
TYP
JA
= T
is 100°C/W. The resulting junction temperature is:
8
1
A
+ (P
(4.801 – 5.004)
.189 – .197
2
7
NOTE 3
D
• θ
6
3
JA
) = 85 + (5 • 0.05 • 100) = 110°C
5
4
(1.270)
.050
BSC
(3.810 – 3.988)
(0.101 – 0.254)
.150 – .157
.004 – .010
NOTE 3
SO8 0303
J
. For example, using
LT6600-15
2
copper trace,
11
660015f
J