ltc1598l Linear Technology Corporation, ltc1598l Datasheet - Page 6

• Manufacturer Part Number: ltc1598l
• Description: 4- And 8-channel, 3v Micropower Sampling 12-bit Serial I/o A/d Converters
• Manufacturer: Linear Technology Corporation

LTC1594L/LTC1598L
TYPICAL PERFORMANCE CHARACTERISTICS
6
– 100
– 120
– 40
– 60
– 20
– 80
0
0
4096 Point FFT Plot
T
V
V
f
f
f
IN
CLK
SMPL
A
CC
REF
= 25 C
= 3.05kHz
0.5
= 2.7V
= 120kHz
= 2.5V
= 7.5kHz
1.0
FREQUENCY (kHz)
1.5
200
190
180
170
160
150
140
130
120
120
100
80
60
40
20
2
0
2.0
10
Minimum Clock Frequency for
0.1LSB Error vs Temperature
0
Maximum Clock Frequency
vs Source Resistance
V
V
V
CC
REF
IN
2.5
10
= 2.7V
R
= 2.5V
+INPUT
–INPUT
SOURCE
W
3.0
SOURCE RESISTANCE ( )
20
–
TEMPERATURE ( C)
1594L/98L G13
3.5
U
30
100
4.0
40
50
T
V
V
– 100
– 120
A
CC
REF
– 40
– 60
– 20
– 80
1594L/98L G16
= 25 C
1594L/98L G18
= 2.7V
0
= 2.5V
60
0
Intermodulation Distortion
T
V
V
f1 = 2.05kHz
f2 = 3.05kHz
f
SMPL
A
CC
REF
1000
= 25 C
0.5
70
= 2.7V
= 2.5V
= 7.5kHz
1.0
FREQUENCY (kHz)
1.5
2.0
2.5
10000
1000
1000
0.01
100
100
0.1
10
3.0
1
–55
Input Channel Leakage Current
vs Temperature
Sample-and-Hold Acquisition Time
vs Source Resistance
1594L/98L G14
T
V
V
V
V
A
CC
REF
3.5
–35
CC
REF
= 25 C
1
= 2.7V
= 2.7V
= 2.5V
= 2.5V
–15
4.0
SOURCE RESISTANCE ( )
10
ON CHANNEL
TEMPERATURE ( C)
5
–100
25
– 10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
– 90
100
0
1k
45
Power Supply Feedthrough
vs Ripple Frequency
V
T
V
V
f
IN
CLK
OFF CHANNEL
A
CC
REF
R
SOURCE
65
= 25 C
= 2.7V (V
= 200kHz
= 2.5V
1000
85
+
10k
RIPPLE FREQUENCY (Hz)
+INPUT
–INPUT
1594L/98L G17
1594L/98L G19
105
RIPPLE
10000
125
100k
= 1mV)
1M
1594L/98L G15
15948lfb
10M