The OPA361-Q1 high-speed amplifier is optimized for 3V portable video applications

OPA361-Q1

Manufacturer Part NumberOPA361-Q1
DescriptionThe OPA361-Q1 high-speed amplifier is optimized for 3V portable video applications
ManufacturerTexas Instruments
OPA361-Q1 datasheet
 


Specifications of OPA361-Q1

Number Of Channels1Vs(min)(v)2.5
Vs(max)(v)3.6Filter -3db Freq(typ)(mhz)9
No. Filter Poles2Gain(db)14.3
Diff Gain(%)1.2Diff Phase(deg)1.6
Input CouplingDC+ShiftOutput CouplingDC or AC
Io(typ)(ma)80Device Control MethodGPIO
Iq Total(typ)(ma)5.3Iq Disabled(typ)(ua)1.5
Operating Temperature Range(c)-40 to 125Pin/package6SC70
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3V Video Amplifier with Internal Gain and Filter in SC70
FEATURES
1
Qualified for Automotive Applications
Excellent Video Performance
Internal Gain: 5.2V/V
Supports TV-Detection
Compatible with OMAP242x and
DAVINCI™ Processors
2-Pole Reconstruction Filter
Input Range Includes Ground
– DC-Coupled Input
Integrated Level Shifter
(1)
– DC-Coupled Output
– No Output Capacitors Needed
Rail-to-Rail Output
Low Quiescent Current: 5.3mA
Shutdown Current: 1.5µA
Single-Supply: 2.5V to 3.3V
SC70-6 Package: 2.0mm × 2.1mm
RoHS Compliant
(1)
Internal circuitry avoids output saturation, even with 0V sync
tip level at the input video signal.
OPA361
10mV
2-Pole
+In
Filter
500Ω
R
SET
4kΩ
G =5 .2V/V
Shutdown
(see n ote 1)
Enable
Control
GND
(1) Closed
when
enabled
during
operation; open when shut down.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Check for Samples:
OPA361-Q1
DESCRIPTION
The OPA361-Q1 high-speed amplifier is optimized for
3V portable video applications. It is specifically
designed to be compatible with the video encoders
embedded in Texas Instruments’ OMAP2420 and
DaVinci processors or other application processors
with 0.5V
range includes GND, which allows a video-DAC
(digital-to-analog converter) to be DC-coupled to the
OPA361-Q1. The TV-detection feature simplifies the
end-user interface significantly by facilitating the
automatic start/stop of video transmission.
The output swings within 5mV of GND and 250mV to
V+ with a standard back-terminated video load
(150Ω). An internal level shift circuit prevents the
output from saturating with 0V input, thus preventing
sync-pulse
Therefore, the OPA361-Q1 is ideally suited for
DC-coupling to the video load.
The
OPA361-Q1
space-sensitive applications by integrating internal
gain setting resistors (G = 5.2V/V) and a 2-pole
video-DAC reconstruction filter.
In shutdown mode, the quiescent current is reduced
to < 1.5µA, dramatically reducing power consumption
and prolonging battery life.
V+
The OPA361-Q1 is available in the tiny 2mm ×
2.1mm SC70-6 package.
75Ω
Out
normal
OPA361-Q1
SBOS552 – MARCH 2011
video output. The input common-mode
PP
clipping
in
common
video
has
been
optimized
Copyright © 2011, Texas Instruments Incorporated
circuits.
for

OPA361-Q1 Summary of contents

  • Page 1

    ... In shutdown mode, the quiescent current is reduced to < 1.5µA, dramatically reducing power consumption and prolonging battery life. V+ The OPA361-Q1 is available in the tiny 2mm × 2.1mm SC70-6 package. 75Ω Out normal OPA361-Q1 SBOS552 – MARCH 2011 video output ...

  • Page 2

    ... OPA361-Q1 (1) For the most current package and ordering information, see the Package Option Addendum at the end of this datasheet, or see the TI website at www.ti.com. The location of pin 1 on the OPA361-Q1 is determined by orienting the package marking as shown in the diagram above. ABSOLUTE MAXIMUM RATINGS Supply voltage V– ...

  • Page 3

    ... GND +2.8V, Disabled +2. +2.8V, Enabled 1. OUT Specified Temperature Range V = +2.8V, Disabled S Product Folder Link(s) :OPA361-Q1 OPA361-Q1 SBOS552 – MARCH 2011 MIN TYP MAX UNIT – ±80 µV/V GND 0.42 V GND 0.48 V GND 0.55 V 450 510 550 Ω ...

  • Page 4

    ... 2.75 2.70 2.65 2.60 2.55 2.50 − 50 +75 +100 +125 +150 Product Folder Link(s) :OPA361-Q1 www.ti.com = 2 SET vs TEMPERATURE − 100 25 0 +125 Temperature (°C) GAIN vs TEMPERATURE − +25 +50 +75 +100 +125 Temperature (°C) OUTPUT VOLTAGE ...

  • Page 5

    ... Product Folder Link(s) :OPA361-Q1 OPA361-Q1 SBOS552 – MARCH 2011 QUIESCENT CURRENT vs TEMPERATURE − +25 +50 +75 +100 +125 Temperature (°C) OUTPUT LEAKAGE vs IN SHUTDOWN 0.5 1 1.5 2 2.5 V (V) ...

  • Page 6

    ... ST EPS Product Folder Link(s) :OPA361-Q1 www.ti.com TURN−OFF TIME Time (25ns/div) GROUP DELAY vs FREQUENCY Frequency (Hz Copyright © 2011, Texas Instruments Incorporated ...

  • Page 7

    ... A shutdown feature reduces quiescent current to less than 1.5µA—crucial for portable applications Although OPA361-Q1 is optimized for the OMAP242x processor also suitable to interface with any digital media processor that outputs a video signal on the order of 0.4V Figure 1 shows a typical application drawing with the OMAP242x processor and the TWL92230 Energy Management Chip ...

  • Page 8

    ... This feature is especially useful for portable video applications, where the device is infrequently connected to a television (TV) or other video device. The Enable logic input voltage is referenced to the OPA361-Q1 GND pin. A logic level HIGH applied to the enable pin enables the op amp. The logic levels are compatible with 1.8V CMOS logic levels. A valid logic HIGH is defined as > ...

  • Page 9

    ... Figure 3. 100/75 Color Bar Signal at Output of OPA361-Q1 The CCIR330/5 test pattern requires one of the greatest dynamic ranges, and therefore tests the OPA361-Q1 output voltage swing capability. The scope plot shown in no clipping on the top side of the signal. ...

  • Page 10

    ... Output Swing Capability Figure 7 shows the true output swing capability of the OPA361-Q1 by taking the tip of the input sync pulse to a slightly negative voltage. Even when the output sync tip is at 3mV, the output after the 75Ω series termination still shows no clipping of the sync pulse. ...

  • Page 11

    ... The TV-detection feature of the OPA361-Q1 works in conjunction with the OMAP242x (or other processors) to detect if a television is connected to the video output of the device. In order to detect a TV load, the OPA361-Q1 is briefly turned off, ideally during the first vertical sync pulse. For the detection, a simple pull-up resistor to the processor logic supply is used on the output of the OPA361-Q1 ...

  • Page 12

    ... Disabling the OPA361-Q1 also disconnects the internal feedback resistors’ path to GND, and therefore there is no current flowing from the logic supply through the pull-up resistor to GND if no video load is connected; this helps to conserve battery life. The typical leakage when the output is pulled high and OPA361-Q1 is disabled is only about 300pA. ...

  • Page 13

    ... TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold Customer on an annual basis. OTHER QUALIFIED VERSIONS OF OPA361-Q1 : • ...

  • Page 14

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing OPA361AQDCKRQ1 SC70 DCK PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 6 3000 179.0 8.4 2.2 Pack Materials-Page 1 28-Mar-2011 Pin1 (mm) (mm) (mm) (mm) Quadrant 2.5 1.2 4.0 8.0 Q3 ...

  • Page 15

    ... Device Package Type OPA361AQDCKRQ1 SC70 PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DCK 6 3000 Pack Materials-Page 2 28-Mar-2011 Width (mm) Height (mm) 195.0 200.0 45.0 ...

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  • Page 18

    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...