lf398 NXP Semiconductors, lf398 Datasheet - Page 5

• Manufacturer Part Number: lf398
• Description: Sample-and-hold Amplifiers
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TYPICAL DC PERFORMANCE CHARACTERISTICS
TYPICAL AC PERFORMANCE CHARACTERISTICS
2001 Aug 03
1000
Sample-and-hold amplifier
0.01
100
100
–10
–15
0.1
10
10
25
20
15
10
–5
1
1
–50
100 pF
5
0
0.001
–25
JUNCTION TEMPERATURE ( C)
1000 pF
Acquisition Time
HOLD CAPACITOR ( F)
Input Bias Current
0
1%
HOLD CAPACITOR
Hold Step
25
0.01
0.01 F
0.01%
50
V
IN
T
j
75
V+ = V– = 15 V
T
= 25 C
= 0 V to 10 V
j
= 25 C
0.1%
100
0.1 F
125 150
0.1
1 F
Figure 4. Typical DC Performance Characteristics
Figure 5. Typical AC Performance Characteristics
10
10
100
20
18
16
14
12
10
10
–1
–2
250
225
200
175
150
125
100
8
6
4
2
0
1
75
50
25
–50
–50
0
–50
Output Short Circuit Current
–25
–25
V
V
HOLD MODE
–25
V+ = V– = 15 V
JUNCTION TEMPERATURE ( C)
Leakage Current Into
S
OUT
JUNCTION TEMPERATURE ( C)
NEGATIVE
V
JUNCTION TEMPERATURE ( C)
OUT
= 15 V
INPUT
STEP
Hold Capacitor
0
0
= 0 V
0
Aperture Time
1 mV
25
25
25
5
SOURCING
SINKING
50
50
50
75
75
75 100 125 150
POSITIVE
100
100
V
INPUT
STEP
IN
= 10 V
125 150
125 150
–0.2
–0.4
–0.6
–0.8
100
0.1
10
0.8
0.6
0.4
0.2
–1
1.8
1.6
1.4
1.2
0.8
0.6
0.4
0.2
1
1
0
2
1
0
0.1
–15
–15
CONSTANT
HYSTERESIS
–10
–10
T
MYLAR
Hold Step Input Voltage
T
R
SAMPLE MODE
Capacitor Hysteresis
j
MYLAR
TIME
j
= 25 C
L
= 25 C
= 10 k
SAMPLE TIME (ms)
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
1
–5
–5
Gain Error
T
j
T
= 55 C
j
POLYPROPYLENE
AND POLYSTYRENE
HYSTERESIS
= 100 C
0
0
AND POLYSTYRENE
POLYPROPYLENE
TIME CONSTANT
10
5
5
LF398
Product data
10
10
SL00087
SL00086
100
15
15