AD9841AJSTZ

AD9841AJSTZ Datasheet

AD9841A/AD9842A

Part	Datasheet
AD9841AJSTZ	AD9841AJSTZ (pdf)

Related Parts	Information
AD9841AJSTZRL	AD9841AJSTZRL

PDF Datasheet Preview
FEATURES 20 MSPS Correlated Double Sampler CDS 4 dB 6 dB 6-Bit Pixel Gain 2 dB to 36 dB 10-Bit Variable Gain VGA Low Noise Clamp Circuits Analog Preblanking Function 10-Bit 9841 or 12-Bit 9842 20 MSPS A/D Converter Auxiliary Inputs with VGA and Input Clamp 3-Wire Serial Digital Interface 3 V Single Supply Operation Low Power 65 mW V Supply 48-Lead LQFP Package APPLICATIONS Digital Still Cameras Digital Video Camcorders Complete 20 MSPS CCD Signal Processors AD9841A/AD9842A PRODUCT DESCRIPTION The AD9841A and AD9842A are complete analog signal processors for CCD applications. Both products feature a 20 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9841A/AD9842A’s signal chain consists of an input clamp, correlated double sampler CDS , Pixel Gain PxGA , digitally controlled variable gain VGA , black level clamp, and A/D converter. The AD9841A offers 10-bit ADC resolution, while the AD9842A contains a true 12-bit ADC. Additional input modes are provided for processing analog video signals. The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input and power-down modes. The AD9841A and AD9842A operate from a single 3 V power supply, typically dissipate 78 mW, and are packaged in a 48lead LQFP. CCDIN CLPDM AUX1IN AUX2IN FUNCTIONAL BLOCK DIAGRAM PBLK AVDD AVSS CLPOB 4dB 6dB PxGA CLP 6 2:1 MUX AD9841A/AD9842A COLOR STEERING 2:1 MUX CLP ADC 10/12 DRVDD DRVSS DOUT OFFSET 8 CONTROL REGISTERS DIGITAL INTERFACE BANDGAP REFERENCE INTERNAL BIAS INTERNAL TIMING VRT VRB CML DVDD DVSS SCK SDATA SHP SHD DATACLK PxGA is a registered trademark of Analog Devices, Inc. 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel 781/329-4700 World Wide Web Site: Fax 781/326-8703 Analog Devices, Inc., 2001 GENERAL SPECIFICATIONS TMIN to TMAX, AVDD = DVDD = V, fDATACLK = 20 MHz, unless otherwise noted. ORDERING GUIDE Model Temperature Range AD9841AJST to +85°C AD9842AJST to +85°C Package Description Thin Plastic Quad Flatpack LQFP Thin Plastic Quad Flatpack LQFP Package Option ST-48 ST-48 THERMAL CHARACTERISTICS Thermal Resistance 48-Lead LQFP Package = 92°C CAUTION ESD electrostatic discharge sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9841A/AD9842A features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE PIN CONFIGURATIONS AD9841A/AD9842A SCK SDATA SL NC STBY NC THREE-STATE DVSS DVDD2 VRB VRT CML SCK SDATA SL NC STBY NC THREE-STATE DVSS DVDD2 VRB VRT CML 48 47 46 45 44 43 42 41 40 39 38 37 NC 1 NC 2 LSB D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 D8 11 MSB D9 12 PIN 1 IDENTIFIER AD9841A TOP VIEW Not to Scale 36 AUX1IN 35 AVSS 34 AUX2IN 33 AVDD2 32 BYP4 31 NC 30 CCDIN 29 BYP2 28 BYP1 27 AVDD1 26 AVSS 25 AVSS 13 14 15 16 17 18 19 20 21 22 23 24 NC = NO CONNECT 48 47 46 45 44 43 42 41 40 39 38 37 LSB D0 1 D1 2 D2 3 D3 4 D4 5 D5 6 D6 7 D7 8 D8 9 D9 10 D10 11 MSB D11 12 PIN 1 IDENTIFIER AD9842A TOP VIEW Not to Scale 36 AUX1IN 35 AVSS 34 AUX2IN 33 AVDD2 32 BYP4 31 NC 30 CCDIN 29 BYP2 28 BYP1 27 AVDD1 26 AVSS 25 AVSS NC = NO CONNECT 13 14 15 16 17 18 19 20 21 22 23 24 DRVDD DRVSS DVSS DATACLK DVDD1 HD PBLK CLPOB SHP SHD CLPDM DRVDD DRVSS DVSS DATACLK DVDD1 HD PBLK CLPOB SHP SHD CLPDM

PDF Datasheet Preview

FEATURES 20 MSPS Correlated Double Sampler CDS 4 dB 6 dB 6-Bit Pixel Gain 2 dB to 36 dB 10-Bit Variable Gain VGA Low Noise Clamp Circuits Analog Preblanking Function 10-Bit 9841 or 12-Bit 9842 20 MSPS A/D Converter Auxiliary Inputs with VGA and Input Clamp 3-Wire Serial Digital Interface 3 V Single Supply Operation Low Power 65 mW V Supply 48-Lead LQFP Package

APPLICATIONS Digital Still Cameras Digital Video Camcorders

Complete 20 MSPS CCD Signal Processors

AD9841A/AD9842A

PRODUCT DESCRIPTION The AD9841A and AD9842A are complete analog signal processors for CCD applications. Both products feature a 20 MHz single-channel architecture designed to sample and condition the outputs of interlaced and progressive scan area CCD arrays. The AD9841A/AD9842A’s signal chain consists of an input clamp, correlated double sampler CDS , Pixel Gain PxGA , digitally controlled variable gain VGA , black level clamp, and A/D converter. The AD9841A offers 10-bit ADC resolution, while the AD9842A contains a true 12-bit ADC. Additional input modes are provided for processing analog video signals.

The internal registers are programmed through a 3-wire serial digital interface. Programmable features include gain adjustment, black level adjustment, input and power-down modes.

The AD9841A and AD9842A operate from a single 3 V power supply, typically dissipate 78 mW, and are packaged in a 48lead LQFP.

CCDIN

CLPDM AUX1IN AUX2IN

FUNCTIONAL BLOCK DIAGRAM

PBLK

AVDD

AVSS

CLPOB
4dB 6dB

PxGA

CLP 6
2:1 MUX

AD9841A/AD9842A

COLOR STEERING
2:1 MUX

CLP ADC
10/12

DRVDD DRVSS DOUT

OFFSET
8 CONTROL REGISTERS

DIGITAL INTERFACE

BANDGAP REFERENCE

INTERNAL BIAS

INTERNAL TIMING

VRT VRB CML

DVDD DVSS

SCK SDATA

SHP SHD DATACLK

PxGA is a registered trademark of Analog Devices, Inc.

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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel 781/329-4700 World Wide Web Site:

Fax 781/326-8703

Analog Devices, Inc., 2001

GENERAL SPECIFICATIONS TMIN to TMAX, AVDD = DVDD = V, fDATACLK = 20 MHz, unless otherwise noted.
ORDERING GUIDE

Model

Temperature Range

AD9841AJST to +85°C

AD9842AJST to +85°C

Package Description

Thin Plastic Quad Flatpack LQFP Thin Plastic Quad Flatpack LQFP

Package Option ST-48

ST-48

THERMAL CHARACTERISTICS Thermal Resistance 48-Lead LQFP Package
= 92°C

CAUTION ESD electrostatic discharge sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9841A/AD9842A features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE

PIN CONFIGURATIONS

AD9841A/AD9842A

SCK SDATA SL NC STBY NC THREE-STATE DVSS DVDD2 VRB VRT CML

SCK SDATA SL NC STBY NC THREE-STATE DVSS DVDD2 VRB VRT CML
48 47 46 45 44 43 42 41 40 39 38 37

NC 1 NC 2 LSB D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 D8 11 MSB D9 12

PIN 1 IDENTIFIER

AD9841A TOP VIEW Not to Scale
36 AUX1IN 35 AVSS 34 AUX2IN 33 AVDD2 32 BYP4 31 NC 30 CCDIN 29 BYP2 28 BYP1 27 AVDD1 26 AVSS 25 AVSS
13 14 15 16 17 18 19 20 21 22 23 24 NC = NO CONNECT
48 47 46 45 44 43 42 41 40 39 38 37

LSB D0 1 D1 2 D2 3 D3 4 D4 5 D5 6 D6 7 D7 8 D8 9 D9 10

D10 11 MSB D11 12

PIN 1 IDENTIFIER

AD9842A TOP VIEW Not to Scale
36 AUX1IN 35 AVSS 34 AUX2IN 33 AVDD2 32 BYP4 31 NC 30 CCDIN 29 BYP2 28 BYP1 27 AVDD1 26 AVSS 25 AVSS

NC = NO CONNECT 13 14 15 16 17 18 19 20 21 22 23 24

DRVDD DRVSS

DVSS DATACLK

DVDD1 HD

PBLK CLPOB

SHP SHD CLPDM

DRVDD DRVSS

DVSS DATACLK

DVDD1 HD

PBLK CLPOB

SHP SHD CLPDM

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived AD9841AJSTZ Datasheet file may be downloaded here without warranties.

Datasheet ID: AD9841AJSTZ 517793