LT6600-10 Linear Technology, LT6600-10 Datasheet - Page 11

• Manufacturer Part Number: LT6600-10
• Description: Very Low Noise Differential Amplifier and 10MHz Lowpass Filter
• Manufacturer: Linear Technology

V
around 105 C/W. Table 2 can be used as a guide when
considering thermal resistance.
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 volt-
ages.
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
PACKAGE DESCRIPTIO
APPLICATIO S I FOR ATIO
–
T
pin to provide a heat sink, the thermal resistance will be
J
= T
A
+ (P
D
A
, and power dissipation, P
S
•
. Therefore, the junction temperature is
.030 .005
JA
U
(0.203 – 0.254)
) = T
.008 – .010
TYP
NOTE:
1. DIMENSIONS IN
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
.245
MIN
J
RECOMMENDED SOLDER PAD LAYOUT
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
, is calculated from the ambient
A
U
S
+ (V
, is a function of signal level,
(0.254 – 0.508)
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.
.010 – .020
.050 BSC
S
• I
(0.406 – 1.270)
(MILLIMETERS)
W
S
.016 – .050
U
8-Lead Plastic Small Outline (Narrow .150 Inch)
•
INCHES
45
JA
)
D
. The power
(Reference LTC DWG # 05-08-1610)
.045 .005
.160 .005
U
S
0 – 8 TYP
, and
S8 Package
(5.791 – 6.197)
.228 – .244
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 DC differential input voltage of
250mV, a differential output voltage of 1V, no load resis-
tance and an ambient temperature of 85 C, the supply
current (current into Pin 3) measures 48.9mA. Assuming
a PC board layout with a 35mm
100 C/W. The resulting junction temperature is:
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
= T
A
8
1
+ (P
(4.801 – 5.004)
.189 – .197
7
2
D
NOTE 3
•
6
JA
3
) = 85 + (5 • 0.0489 • 100) = 109 C
5
4
(1.270)
.050
BSC
(3.810 – 3.988)
(0.101 – 0.254)
.150 – .157
.004 – .010
NOTE 3
2
SO8 0303
www.DataSheet4U.com
copper trace, the
J
. For example, using
LT6600-10
11
JA
6600f
is
J