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ADA4431-1YCPZ-RL

P1-P3P4-P6P7-P9P10-P12P13-P13
ADA4431-1 Data Sheet
Rev. A | Page 6 of 12
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
GND
SUBS
+V
S
4
CAP1
12
10
9
+V
S
DIS
11
IN
LDO
7
CAP3
8
CAP4
6
GND
5
CAP2
13
FB1
14
FB2
15
OUT
16
SAG
ADA4431-1
TOP VIEW
(Not to Scale)
06734-004
NOTES
1. EXPOSED PAD. THE EPAD IS ELECTRICALLY ISOLATED.
TO OPTIMIZE THERMAL PERFORMANCE, CONNECT THE EPAD
TO A GND PLANE.
Figure 4. Pin Configuration
Table 5. Pin Function Descriptions
Pin No. Mnemonic Description
1 +V
S
Supply Voltage.
2 IN Video Input.
3 DIS Disable Pin. High = charge pump on, floating = charge pump off, low = disabled.
4 LDO Load Detect Output. High = video load present.
5 CAP4 Capacitor 2, Lead 2.
6 CAP3 Capacitor 2, Lead 1.
7 GND Ground.
8 CAP2 Capacitor 1, Lead 2.
9 CAP1 Capacitor 1, Lead 1.
10 +V
S
Supply Voltage.
11
SUBS
Substrate Voltage Pin. Bypass to GND with 1.0 µF capacitor.
12 GND Ground.
13 SAG SAG Feedback Pin.
14 OUT Video Output.
15 FB2 Load Detect Feedback Pin 2. Connect to device side of series termination resistor.
16 FB1 Load Detect Feedback Pin 1. Connect to load side of series termination resistor.
EPAD Exposed Pad. The EPAD is electrically isolated. To optimize thermal performance, connect the EPAD to a GND plane.
Data Sheet ADA4431-1
Rev. A | Page 7 of 12
TYPICAL PERFORMANCE CHARACTERISTICS
V
S
= 3.0 V (@ T
A
= 25°C, V
IN
= 1 V p-p, R
L
= 150 Ω, unless otherwise noted).
10
0
–10
–20
–30
–40
–50
–60
–70
NORMALIZED GAIN (dB)
0.1 1 10 100
FREQUENCY (MHz)
CHARGE PUMP ON
CHARGE PUMP OFF
06734-005
Figure 5. Large Signal Frequency Response
1
0
–5
–4
–3
–2
–1
NORMALIZED GAIN (dB)
0.1 1 10
FREQUENCY (MHz)
CHARGE PUMP ON
CHARGE PUMP OFF
06734-006
Figure 6. Frequency Response Flatness
–60
–105
–100
–95
–90
–85
–80
–75
–70
–65
NORMALIZED GAIN (dB)
0.1 1 10 100
FREQUENCY (MHz)
DIS = 0V
06734-007
Figure 7. Input-to-Output Isolation vs. Frequency
60
0
10
20
30
40
50
GROUP DELAY (ns)
0.1 1 10 100
FREQUENCY (MHz)
CHARGE PUMP OFF
CHARGE PUMP ON
06734-008
Figure 8. Group Delay vs. Frequency
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
PSRR (dB)
0.1 1 10 100
FREQUENCY (MHz)
CHARGE PUMP ON
CHARGE PUMP OFF
V
IN
= 100mV p-p
DIS = 3V
06734-009
Figure 9. PSRR vs. Frequency
10
0
–10
–20
–30
–40
–50
–60
NORMALIZED GAIN (dB)
0.1 1 10 100
FREQUENCY (MHz)
+25°C
0°C
–40°C
+85°C
06734-010
Figure 10. Frequency Response for Various Temperatures
ADA4431-1 Data Sheet
Rev. A | Page 8 of 12
1
–1
0
–2
–3
–4
–5
–6
–7
NORMALIZED GAIN (dB)
0.1 1 10
FREQUENCY (MHz)
+25°C
0°C
–40°C
+85°C
06734-011
Figure 11. Flatness Response for Various Temperatures
6
5
4
3
2
1
0
SUPPLY CURRENT (mA)
03.02.52.01.51.00.5
DISABLE (DIS) PIN VOLTAGE (V)
06734-012
Figure 12. Supply Current vs. Disable (DIS) Pin Voltage
7
6
5
4
3
2
1
0
70
60
50
40
30
20
10
0
SUPPLY CURRENT (mA)
DISABLED SUPPLY CURRENT (µA)
–40 –30 –20 –10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
ACTIVE
DISABLED
06734-014
Figure 13. Supply Current vs. Temperature
06734-015
CH2 200mV M100ns A CH1 316mV
2
T
Figure 14. Transient Response
06734-016
CH1 2.00V CH2 500mV M10.0ms A CH1 1.72V
1
2
T
DISABLE (DIS) PIN
OUTPUT
Figure 15. Output Enable
06734-017
CH1 2.00V CH2 500mV M40.0ns A CH1 1.72V
1
2
T
DISABLE (DIS) PIN
OUTPUT
Figure 16. Output Disable
P1-P3P4-P6P7-P9P10-P12P13-P13

ADA4431-1YCPZ-RL

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