Datasheet
LTC6603
6
6603fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: LTC6603C and LTC6603I are guaranteed functional over the
operating temperature range of –40°C to 85°C.
Note 3: LTC6603C is guaranteed to meet specifi ed performance from
0°C to 70°C. The LTC6603C is designed, characterized and expected to
meet specifi ed performance from –40°C to 85°C but is not tested or QA
sampled at these temperatures. The LTC6603I is guaranteed to meet the
specifi ed performance limits from –40°C to 85°C.
TYPICAL PERFORMANCE CHARACTERISTICS
DC Gain Matching DC Gain Matching Phase Matching
Phase Matching
Gain and Group Delay
vs Frequency
Note 4: This test measures the internal oscillator accuracy (deviation from
the f
CLK
equation). Variations in the internal oscillator cause variations in
the fi lter cutoff frequency. See the “Applications Information” section.
Note 5: Guaranteed by design, not subject to test.
Note 6: To conform to the logic IC standard, current out of a pin is
arbitrarily given a negative value.
MISMATCH (dB)
UNITS (%)
6603 G01
70
60
20
10
30
40
50
0
–0.2 0.2–0.15 –0.1 –0.05 0 0.05 0.1 0.15
V
S
= 3V, BW = 2.5MHz
GAIN SETTING = 0dB, T
A
= 25°C
1000 UNITS
MISMATCH (dB)
UNITS (%)
6603 G02
70
60
20
10
30
40
50
0
–0.06 0.1–0.04–0.02 0 0.02 0.04 0.06 0.08
V
S
= 3V, BW = 156.25kHz
GAIN SETTING = 0dB, T
A
= 25°C
1000 UNITS
MISMATCH (DEG)
UNITS (%)
6603 G03
30
25
5
10
15
20
0
–2.5 4–2–1.5–1–0.5 0 0.5 1 1.5 2 2.5 3 3.5
V
S
= 3V, BW = 2.5MHz
f = 2MHz, T
A
= 25°C
1000 UNITS
MISMATCH (DEG)
UNITS (%)
6603 G04
60
50
20
10
30
35
40
0
–2.5 2.5–2 –1.5 –1 –0.5 0 0.5 1 1.5 2
V
S
= 3V, BW = 156.25kHz
f = 125kHz, T
A
= 25°C
1000 UNITS
FREQUENCY (Hz)
GAIN (dB)
6603 G05
30
10
0
20
–60
–40
–50
–30
–20
–10
–70
GROUP DELAY (ns)
800
720
680
760
440
520
480
560
600
640
400
10k 1M 10M100k
R
BIAS
= 30.9k, V
S
= 3V
LPF1 = 1, BW = 2.5MHz
T
A
= 25°C
GAIN = 24dB
GAIN = 12dB
GAIN = 6dB
GAIN = 0dB
GROUP DELAY