REF191ES Analog Devices Inc, REF191ES Datasheet - Page 18

• Manufacturer Part Number: REF191ES
• Description: IC VOLT REF LDO 2.048V 8SOIC
• Manufacturer: Analog Devices Inc
• Series: REF19r

Specifications of REF191ES

• Rohs Status: RoHS non-compliant
• Reference Type: Series
• Voltage - Output: 2.048V
• Tolerance: ±2mV
• Temperature Coefficient: 5ppm/°C
• Voltage - Input: 3 ~ 15 V
• Number Of Channels: 1
• Current - Quiescent: 45µA
• Current - Output: 30mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Current - Cathode: -

REF19x Series
V IN = 15V
–100
–120
–20
–40
–60
–80
Figure 10. Ripple Rejection vs. Frequency Measurement Circuit
0
4
3
2
1
0
10
10
V
IN
Figure 11. Output Impedance vs. Frequency
REF
1μF
Figure 9. Ripple Rejection vs. Frequency
= 7V
100
10μF
10μF
100
1kΩ
2
REF19x
2
REF19x
1k
4
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
4
6
10k
6
1μF
10k
200V
1μF
Z
100k
1kΩ
10μF
V
V
100k
G
S
= 4V
= 2V p-p
1M
OUTPUT
10M
1M
Rev. K | Page 18 of 28
OFF
ON
100%
100%
90%
10%
90%
10%
0%
0%
Figure 15. Power-On Response Time Measurement Circuit
Figure 13. Load Transient Response Measurement Circuit
2V
2V
LOAD
20mV
1mA
V
5V
IN
V
= 15V
IN
= 7V
Figure 14. Power-On Response Time
Figure 12. Load Transient Response
2
4
REF19x
LOAD
30mA
2
4
REF19x
6
1μF
6
1μF
0
10mA
100µs
100µs