Datasheet
LTC6603
2
6603fa
PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS
V+
IN
to GND ................................................................6V
V+
A
, V+
D
to GND .........................................................4V
V+
A
to V+
D
.............................................. –0.3V to +0.3V
Filter Inputs to GND ....................... –0.3V to V+
IN
+ 0.3V
Pins 3, 4 to GND ............................. –0.3V to V+
A
+ 0.3V
Pins 5, 6, 9-11,
15, 17, 21, 22 to GND .....................–0.3V to V+
D
+ 0.3V
Output Short-Circuit Duration .......................... Indefi nite
Operating Temperature Range (Note 2)
LTC6603CUF .......................................–40°C TO 85°C
LTC6603IUF ........................................–40°C TO 85°C
Specifi ed Temperature Range (Note 3)
LTC6603CUF ...........................................0°C TO 70°C
LTC6603IUF ........................................–40°C TO 85°C
Storage Temperature Range ................... –65°C to 150°C
(Note 1)
24 23 22 21 20 19
7 8 9
TOP VIEW
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
V+
IN
V+
A
V
OCM
R
BIAS
CLKCNTL
LPF1(CS)
–OUTA
SER
V+
D
CLKIO
GND
+OUTB
+INA
–INA
GAIN1
GAIN0(D0)
CAP
+OUTA
+INB
–INB
LPFO(SCLK)
SDI
SDO
–OUTB
25
T
JMAX
= 150°C, θ
JA
= 37°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 25) IS GND. MUST BE SOLDERED TO THE PCB.
PARAMETER CONDITIONS MIN TYP MAX UNITS
Filter Gain Either
Channel
External Clock = 80MHz, Filter Cutoff (f
C
)= 156.25kHz, V
IN
= 3.6V
P-P,
Pin 3 Open
DC Gain, Gain Set = 0dB
f
IN
= 62.5kHz (0.4 • f
C
), Relative to DC Gain
f
IN
= 125kHz (0.8 • f
C
), Relative to DC Gain
f
IN
= 156.25kHz (f
C
), Relative to DC Gain
f
IN
= 234.375kHz (1.5 • f
C
), Relative to DC Gain
l
l
l
l
l
0.25
–0.5
0.4
–0.6
0.4
–0.3
0.6
–0.4
–32
0.55
–0.1
0.8
–0.2
–29.5
dB
dB
dB
dB
dB
Matching of Filter
Gain
External Clock = 80MHz, Filter Cutoff (f
C
)= 156.25kHz, V
IN
= 3.6V
P-P,
Pin 3 Open
DC Gain, Gain Set = 0dB
f
IN
= 62.5kHz (0.4 • f
C
)
f
IN
= 125kHz (0.8 • f
C
)
f
IN
= 156.25kHz (f
C
)
l
l
l
l
±0.03
±0.03
±0.03
±0.03
±0.1
±0.1
±0.1
±0.15
dB
dB
dB
dB
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE
LTC6603CUF#PBF LTC6603CUF#TRPBF 6603
24-Lead (4mm × 4mm) Plastic QFN
0°C to 70°C
LTC6603IUF#PBF LTC6603IUF#TRPBF 6603
24-Lead (4mm × 4mm) Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V+
A
= V+
D
= V+
IN
= 3V, V
ICM
= V
OCM
= 1.5V, Gain = 0dB, lowpass
cutoff = 2.5MHz, internal clocking with R
BIAS
= 30.9k unless otherwise noted.