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ADP5070ACPZ-R7 数据表(PDF) 25 Page - Analog Devices

部件名 ADP5070ACPZ-R7
功能描述  Independent Positive and Negative Outputs
PDF  28 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP5070ACPZ-R7 数据表(HTML) 25 Page - Analog Devices

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ADP5070
Data Sheet
Rev. A | Page 24 of 27
SUPER LOW NOISE WITH OPTIONAL LDOS
Low dropout regulators (LDOs) can be added to the ADP5070
output to provide super low noise supplies for high performance
ADCs, digital-to-analog converters (DACs), and other precision
applications. Table 12 shows recommended companion devices,
and Figure 48 shows a typical application schematic for ±15 V
generation from a +5 V supply.
ADP5070
SS
INBK
SW1
COMP1
RC1
5.6kΩ
CC1
47nF
COMP2
RC2
12kΩ
CC2
47nF
CVREG
1µF
VREG
EN1
SYNC/FREQ
SLEW
SEQ
EN2
AGND
PVIN1
PVIN2
PVINSYS
CIN1
10µF
VIN
+5V
FB1
D1
DFLS240
L1
3.3µH
L2
6.8µH
RFB1
113kΩ
RFT1
2.15MΩ
+16V
SW2
PGND
FB2
VREF
D2
DFLS240
RFB2
100kΩ
–16V
VPOS = +15V
VNEG = –15V
CVREF
1µF
COUT1
10µF
COUT2
10µF
RFT2
2.1MΩ
EN
GND
CSS3
1nF
VIN
VOUT
ADJ
(5V)
SS
ADP7142
RFB3
10kΩ
RFT3
20kΩ
CNR3
1µF
COUT3
2.2µF
RNR3
1kΩ
EN
GND
VIN
VOUT
ADJ
ADP7182
RFB4
59kΩ
RFT4
52.3kΩ
CNR4
47µF
COUT4
2.2µF
RNR4
5.9kΩ
CIN3
1µF
CIN4
2.2µF
Figure 48. Super Low Noise ±15 V Generation with Post Regulation by the ADP7142 (+40 V, +200 mA, Low Noise LDO) and ADP7182 (−28 V, −200 mA, Low Noise LDO)
Table 12. Recommended LDOs for Super Low Noise Operation
Parameter
ADP7102
ADP7104
ADP7105
ADP7118
ADP7142
ADP7182
VIN Range
3.3 V to 20 V
3.3 V to 20 V
3.3 V to 20 V
2.7 V to 20 V
2.7 V to 40 V
−2.7 V to −28 V
Fixed VOUT
1.5 V to 9 V
1.5 V to 9 V
1.8 V, 3.3 V, 5 V
1.2 V to 5 V
1.2 V to 5 V
−1.8 V to −5 V
Adjustable VOUT
1.22 V to 19 V
1.22 V to 19 V
1.22 V to 19 V
1.2 V to 19 V
1.2 V to 39 V
−1.22 V to−27 V
IOUT
300 mA
500 mA
500 mA
200 mA
200 mA
−200 mA
IQ at No Load
400 µA
400 µA
400 µA
50 µA
50 µA
−33 µA
ISHDN Typical
40 µA
40 µA
40 µA
2 µA
2 µA
−2 µA
Soft Start
No
No
Yes
Yes
Yes
No
PGOOD
Yes
Yes
Yes
No
No
No
Noise (Fixed), 10 Hz
to 100 kHz
15 µV rms
15 µV rms
15 µV rms
11 µV rms
11 µV rms
18 µV rms
PSRR (100 kHz)
60 dB
60 dB
60 dB
68 dB
68 dB
45 dB
PSRR (1 MHz)
40 dB
40 dB
40 dB
50 dB
50 dB
45 dB
Package
8-lead LFCSP,
8-lead SOIC
8-lead LFCSP,
8-lead SOIC
8-lead LFCSP,
8-lead SOIC
6-lead LFCSP,
8-lead SOIC,
5-lead TSOT
6-lead LFCSP,
8-lead SOIC,
5-lead TSOT
6-lead LFCSP, 8-lead
LFCSP, 5-lead TSOT



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