ADA4431-1YCPZ-R7 Analog Devices Inc, ADA4431-1YCPZ-R7 Datasheet

Low Pwr Comp Video Fltr W/ULP Disable

ADA4431-1YCPZ-R7

Manufacturer Part Number
ADA4431-1YCPZ-R7
Description
Low Pwr Comp Video Fltr W/ULP Disable
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADA4431-1YCPZ-R7

Applications
Filter
Output Type
Rail-to-Rail
Number Of Circuits
1
-3db Bandwidth
7.9MHz
Current - Supply
4.7mA
Voltage - Supply, Single/dual (±)
2.5 V ~ 3.6 V
Mounting Type
Surface Mount
Package / Case
16-UFQFN, CSP Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADA4431-1YCPZ-R7TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ADA4431-1YCPZ-R7
Manufacturer:
Analog Devices Inc
Quantity:
1 992
FEATURES
Third-order, low-pass video filter
Low quiescent current: 4.7 mA typical
Low power-down current: 24 μA typical
Load detection capability
SAG correction
Low supply voltage: 2.5 V to 3.6 V
Charge pump
Rail-to-rail output
High input-to-output isolation in disabled state
Small package
Wide operating temperature range: −40°C to +85°C
APPLICATIONS
Portable media players
Portable gaming consoles
Cell phones
Digital still cameras
Portable DVD players
Portable video cameras
GENERAL DESCRIPTION
The ADA4431-1 is a fully integrated video reconstruction filter
that combines excellent video specifications with low power
consumption, making it ideal for portable video filtering
applications. The ADA4431-1 is able to detect whether a video
load is present at the output, powering down the device when
the load is disconnected.
The ADA4431-1 operates on single supplies as low as 2.5 V
while providing the dynamic range required by the most
demanding video systems. The on-board charge pump
provides a virtual negative supply, allowing the video signal to
be dc-coupled and the black level to be set to ground, while the
sync passes cleanly at 300 mV below ground.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
1 dB flatness out to 6 MHz
27 dB rejection at 27 MHz
Allows use of smaller capacitors in ac-coupled outputs
Creates a negative voltage from single positive supply
Allows capless output coupling with no dc offset
89 dB @ 1 MHz
3 mm × 3 mm LFCSP
Low 0.55 mm package height
Ultralow Power SD Video Filter
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
When operating with the charge pump off, the ADA4431-1
provides a dc offset to keep the sync tip approximately 100 mV
above ground. In addition, the part features SAG correction,
which permits the use of smaller capacitors in applications with
ac-coupled outputs.
The ADA4431-1 is packaged in a low profile 16-lead LFCSP and
operates in the industrial temperature range of −40°C to +85°C.
ENCODER
CONTROLLER
VIDEO
DAC/
SYSTEM
LDO
+V
DIS
IN
S
4
3
2
7
1
3
4
2
CAP4 CAP3
5
IN
Figure 2. Typical Application Circuit
LDO
DIS
GND
PIN CONFIGURATION
0.1µF
with Load Detection
x1
LPF
©2007 Analog Devices, Inc. All rights reserved.
CHARGE PUMP
1
6
+V
ADA4431-1
S
G = 2
CAP2 CAP1
8
Figure 1.
DETECT
+V
LPF
0.1µF
LOAD
0.1µF
S
10
9 11
+V
S
SUBS GND
x2
ADA4431-1
1.0µF
0.1µF
12
SAG
11
10
OUT
FB1
FB2
9
12
GND
SUBS
+V
CAP1
www.analog.com
S
16
15
14
13
75Ω
VIDEO
OUT

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ADA4431-1YCPZ-R7 Summary of contents

Page 1

... In addition, the part features SAG correction, which permits the use of smaller capacitors in applications with ac-coupled outputs. The ADA4431-1 is packaged in a low profile 16-lead LFCSP and operates in the industrial temperature range of −40°C to +85°C. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. ...

Page 2

... ADA4431-1 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configuration............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Resistance ...................................................................... 5 Maximum Power Dissipation ..................................................... 5 ESD Caution.................................................................................. 5 REVISION HISTORY 8/07—Revision 0: Initial Version Pin Configuration and Function Descriptions..............................6 Typical Performance Characteristics ..............................................7 Theory of Operation .........................................................................9 Overview ........................................................................................9 Charge Pump Operation ..............................................................9 Load Detect ...

Page 3

... DIS = 3.0 V (enabled and charge pump on) DIS = 0 V (disabled) Limited by output range f = 100 kHz, output referred MHz, DIS = MHz Modulated 10 step ramp, sync tip Modulated 10 step ramp, sync tip 100 kHz to 5 MHz Rev Page ADA4431-1 Min Typ Max Unit 4.7 7 μ ...

Page 4

... ADA4431 3 25° p- Table 2. Parameter ELECTRICAL SPECIFICATIONS Quiescent Supply Current Normal Mode Load Searching Mode Disabled Mode Disable Pin Current Supply Voltage Range Input Voltage Input Resistance Input Capacitance Output Voltage Range Output Offset Voltage Power Supply Rejection Pass-Band Gain Input-to-Output Isolation—Disabled FILTER CHARACTERISTICS − ...

Page 5

... Table 4. Thermal Resistance Package Type 16-lead LFCSP-UQ (CP-16-12) MAXIMUM POWER DISSIPATION The maximum safe power dissipation in the ADA4431-1 package is limited by the associated rise in junction temperature ( the die. At approximately 150°C, which is the glass J transition temperature, the plastic changes its properties ...

Page 6

... CAP1 SUBS 12 GND 13 SAG 14 OUT 15 FB2 16 FB1 +V 12 GND 1 S ADA4431-1 2 SUBS IN 11 TOP VIEW DIS (Not to Scale) 9 CAP1 LDO 4 Figure 4. Pin Configuration Description Supply Voltage. Video Input. Disable Pin. High = charge pump on, floating = charge pump off, low = disabled. Load Detect Output. High = video load present. ...

Page 7

... CHARGE PUMP ON –15 –20 CHARGE PUMP OFF –25 –30 –35 –40 –45 –50 0 FREQUENCY (MHz) Figure 9. PSRR vs. Frequency 10 0 –10 –20 –30 –40 –50 –60 0 FREQUENCY (MHz) Figure 10. Frequency Response for Various Temperatures ADA4431-1 100 100 +85°C +25°C 0°C –40°C 100 ...

Page 8

... ADA4431 +85°C –1 +25°C 0°C –40°C –2 –3 –4 –5 –6 –7 0.1 1 FREQUENCY (MHz) Figure 11. Flatness Response for Various Temperatures 0.5 1.0 1.5 DISABLE (DIS) PIN VOLTAGE (V) Figure 12. Supply Current vs. Disable (DIS) Pin Voltage 7 6 ACTIVE DISABLED –40 –30 –20 –10 ...

Page 9

... ADA4431-1 output is able to drive 2 V p-p video signals into two doubly terminated video loads (150 Ω each single 2.5 V supply. The ADA4431-1 has a gain of 2 when the SAG correction pin is tied directly to the output, which makes up for the 6 dB termination loss (see Figure 17, Output Option 1). ...

Page 10

... Jumper Block J4 exercises the disable pin (DIS). When a jumper is connected from the center pin to V+, the charge pump is enabled. Connecting the center pin to GND forces the ADA4431-1 into low power mode. With the jumper removed, the ADA4431-1 is enabled but the charge pump is disabled. ...

Page 11

... Figure 18. Evaluation Board—Front Figure 19. Evaluation Board—Back Rev Page ADA4431-1 ...

Page 12

... PLANE ORDERING GUIDE Model Temperature Range 1 ADA4431-1YCPZ-R2 −40°C to +85°C 1 ADA4431-1YCPZ-R7 −40°C to +85°C 1 ADA4431-1YCPZ-RL −40°C to +85° RoHS Compliant Part. ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...

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