LTC1594 Linear Technology, LTC1594 Datasheet - Page 6

• Manufacturer Part Number: LTC1594
• Description: 4- and 8-Channel/ Micropower Sampling 12-Bit Serial I/O A/D Converters
• Manufacturer: Linear Technology

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1594/LTC1598
6
–100
– 50
100
10
20
30
40
50
60
70
80
90
0
0
1
1
Attenuation vs Input Frequency
Power Supply Feedthrough
vs Ripple Frequency
T
V
f
T
V
V
f
SMPL
CLK
A
CC
A
CC
REF
= 25 C
= 25 C
= V
= 5V (V
= 320kHz
= 5V
= 16.8kHz
REF
10
RIPPLE FREQUENCY (kHz)
10
INPUT FREQUENCY (kHz)
= 5V
RIPPLE
320
160
240
80
0
– 55
= 20mV)
100
100
Minimum Clock Frequency for
0.1LSB Error vs Temperature
V
CC
– 35 –15
= V
REF
1000
1000
W
= 5V
TEMPERATURE ( C)
1594/98 G13
1594/98 G16
5
10000
U
10000
25
45
–140
–100
–120
–20
–60
–80
360
300
240
120
–40
180
60
0
0
65
1594/98 G19
0.1
0
4096 Point FFT Plot
Maximum Clock Frequency
vs Source Resistance
T
V
T
V
f
f
f
A
CC
IN
CLK
SMPL
A
CC
85
= 25 C
= 25 C
= 5kHz
= V
1
= V
= 320kHz
= 12.5kHz
REF
SOURCE RESISTANCE (k )
REF
= 5V
2
= 5V
FREQUENCY (kHz)
3
1
V
4
IN
R
5
SOURCE
+ INPUT
COM
1000
0.01
100
0.1
10
1
–
1594/98 G17
– 60
1594/98 G14
6
Input Channel Leakage Current
vs Temperature
V
V
– 40
CC
REF
10
7
= 5V
–20
= 5V
0
TEMPERATURE ( C)
10000
ON CHANNEL
–100
–140
–120
1000
20
– 60
– 40
–20
–80
100
0
0.1
40
0
Intermodulation Distortion
Sample-and-Hold Acquisition Time
vs Source Resistance
T
V
T
V
f
f
f
1
2
SMPL
A
A
CC
CC
OFF CHANNEL
60
= 5kHz
= 6kHz
= 25 C
= 25 C
= V
= V
1
= 12.5kHz
80
REF
REF
1
SOURCE RESISTANCE ( )
100
= 5V
= 5V
2
FREQUENCY (kHz)
1594/98 G20
120
10
3
140
V
IN
4
100
R
SOURCE
5
+
1000
+ INPUT
COM
1594/98 G15
1594/98 G18
6
10000
7