AD9941BSTZ

AD9941BSTZ Datasheet

AD9941

Part	Datasheet
AD9941BSTZ	AD9941BSTZ (pdf)

Related Parts	Information
AD9941BSTZRL	AD9941BSTZRL

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Differential sensor input with 1 V p-p input range 0 dB/6 dB variable gain amplifier VGA Low noise optical black clamp circuit 14-bit, 56 MSPS analog-to-digital converter ADC No missing codes guaranteed 3-wire serial digital interface 3 V single-supply operation Low power CMOS 145 mW V, 56 MHz 48-lead LQFP package Digital still cameras using CMOS imagers Professional HDTV camcorders Professional/high-end digital cameras Broadcast cameras Complete 14-Bit, 56 MSPS Imaging Signal Processor AD9941 The AD9941 is a complete analog signal processor for imaging applications that do not require correlated double sampling CDS . It is also suitable for processing the output signal from the AD9940 CDS front end product. It features a 56 MHz, singlechannel architecture designed to sample and condition the output of CMOS imagers and CCD arrays already containing on-chip CDS. The AD9941 signal chain consists of a differential input sample-and-hold amplifier SHA , a digitally controlled variable gain amplifier VGA , a black level clamp, and a 14-bit ADC. The internal registers are programmed through a 3-wire serial digital interface. The AD9941 operates from a single 3 V supply, typically dissipates 145 mW, and is packaged in a 48-lead LQFP. VIN+ FUNCTIONAL BLOCK DIAGRAM AVDD AVSS REFT REFB PBLK AD9941 0dB, 6dB VGA BAND GAP REFERENCE 14-BIT ADC 8 INTERNAL REGISTERS DIGITAL INTERFACE BLK CLAMP LEVEL SCK SDATA Figure ADCLK DRVDD DRVSS DOUT CLPOB DVDD DVSS 05504-001 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: Fax 2005 Analog Devices, Inc. All rights reserved. TABLE OF CONTENTS Specifications Digital Specifications Analog Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings Thermal ESD Caution Pin Configuration and Function Descriptions 0 Initial Version AD9941 Equivalent Input/Output Serial Interface Circuit Description and Operation Differential Input SHA Variable Gain Amplifier ADC 13 Optical Black Applications Outline Ordering Guide SPECIFICATIONS Table Parameter TEMPERATURE RANGE Operating Storage POWER SUPPLY VOLTAGE AVDD, DVDD, DRVDD POWER DISSIPATION Normal MHz, AVDD = DVDD = DRVDD = V Standby Mode MAXIMUM CLOCK RATE DIGITAL SPECIFICATIONS DRVDD = V, CL = 20 pF, unless otherwise noted. Table Parameter LOGIC INPUTS High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current Input Capacitance LOGIC OUTPUTS High Level Output Voltage , IOH = 2 mA Low Level Output Voltage , IOL = 2 mA Min −25 −65 Symbol VIH VIL IIH IIL CIN VOH VOL AD9941 Unit +150 Unit ANALOG SPECIFICATIONS TMIN to TMAX, AVDD = DVDD, fADCLK = 56 MHz, unless otherwise noted. Table Parameter ANALOG INPUTS VIN+, VIN− Input Common-Mode Range1 Maximum Input Amplitude1 Maximum Differential Input Amplitude1 OB Correction Range Gain 1 6 dB 1 Gain 2 0 dB 1 VARIABLE GAIN AMPLIFIER VGA Gain Control Resolution Gain Range CCD Mode Gain 1 CCD Mode Gain 2 BLACK LEVEL CLAMP Clamp Level Resolution Clamp Level Minimum Clamp Level Code 0 Maximum Clamp Level Code 255 A/D CONVERTER Resolution Differential Nonlinearity DNL No Missing Codes Integral Nonlinearity Full-Scale Input Voltage ORDERING GUIDE Model AD9941BSTZ1 AD9941BSTZRL1 Temperature Range −25°C to +85°C −25°C to +85°C 1 Z = Pb-free part. Package Description 48-Lead Low Profile Quad Flat Package LQFP 48-Lead Low Profile Quad Flat Package LQFP Package Option ST-48 ST-48 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

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Differential sensor input with 1 V p-p input range 0 dB/6 dB variable gain amplifier VGA Low noise optical black clamp circuit 14-bit, 56 MSPS analog-to-digital converter ADC No missing codes guaranteed 3-wire serial digital interface 3 V single-supply operation Low power CMOS 145 mW V, 56 MHz 48-lead LQFP package

Digital still cameras using CMOS imagers Professional HDTV camcorders Professional/high-end digital cameras Broadcast cameras

Complete 14-Bit, 56 MSPS Imaging Signal Processor

AD9941

The AD9941 is a complete analog signal processor for imaging applications that do not require correlated double sampling CDS . It is also suitable for processing the output signal from the AD9940 CDS front end product. It features a 56 MHz, singlechannel architecture designed to sample and condition the output of CMOS imagers and CCD arrays already containing on-chip CDS. The AD9941 signal chain consists of a differential input sample-and-hold amplifier SHA , a digitally controlled variable gain amplifier VGA , a black level clamp, and a 14-bit ADC.

The internal registers are programmed through a 3-wire serial digital interface.

The AD9941 operates from a single 3 V supply, typically dissipates 145 mW, and is packaged in a 48-lead LQFP.

VIN+

FUNCTIONAL BLOCK DIAGRAM

AVDD AVSS

REFT REFB

PBLK

AD9941
0dB, 6dB VGA

BAND GAP REFERENCE
14-BIT ADC
8 INTERNAL REGISTERS

DIGITAL INTERFACE

BLK CLAMP LEVEL

SCK SDATA

Figure

ADCLK

DRVDD DRVSS DOUT

CLPOB

DVDD DVSS
05504-001

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.

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

Tel:

Fax 2005 Analog Devices, Inc. All rights reserved.

TABLE OF CONTENTS

Specifications Digital Specifications Analog Specifications Timing Specifications Timing Diagrams

Absolute Maximum Ratings Thermal ESD Caution

Pin Configuration and Function Descriptions
0 Initial Version

AD9941

Equivalent Input/Output Serial Interface Circuit Description and Operation
Differential Input SHA Variable Gain Amplifier ADC 13 Optical Black Applications Outline Ordering Guide

SPECIFICATIONS

Table Parameter TEMPERATURE RANGE

Operating Storage POWER SUPPLY VOLTAGE AVDD, DVDD, DRVDD POWER DISSIPATION Normal MHz, AVDD = DVDD = DRVDD = V Standby Mode MAXIMUM CLOCK RATE

DIGITAL SPECIFICATIONS

DRVDD = V, CL = 20 pF, unless otherwise noted.

Table Parameter LOGIC INPUTS

High Level Input Voltage Low Level Input Voltage High Level Input Current Low Level Input Current Input Capacitance LOGIC OUTPUTS High Level Output Voltage , IOH = 2 mA Low Level Output Voltage , IOL = 2 mA

Min −25 −65

Symbol VIH VIL IIH IIL CIN VOH VOL

AD9941

Unit
+150

Unit

ANALOG SPECIFICATIONS

TMIN to TMAX, AVDD = DVDD, fADCLK = 56 MHz, unless otherwise noted.

Table

Parameter

ANALOG INPUTS VIN+, VIN−

Input Common-Mode Range1

Maximum Input Amplitude1

Maximum Differential Input Amplitude1

OB Correction Range

Gain 1 6 dB 1

Gain 2 0 dB 1

VARIABLE GAIN AMPLIFIER VGA

Gain Control Resolution

Gain Range

CCD Mode Gain 1

CCD Mode Gain 2

BLACK LEVEL CLAMP

Clamp Level Resolution

Clamp Level

Minimum Clamp Level Code 0

Maximum Clamp Level Code 255

A/D CONVERTER

Resolution

Differential Nonlinearity DNL

No Missing Codes

Integral Nonlinearity

Full-Scale Input Voltage
ORDERING GUIDE

Model AD9941BSTZ1 AD9941BSTZRL1

Temperature Range −25°C to +85°C −25°C to +85°C
1 Z = Pb-free part.

Package Description 48-Lead Low Profile Quad Flat Package LQFP 48-Lead Low Profile Quad Flat Package LQFP

Package Option ST-48 ST-48
2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.

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 AD9941BSTZ Datasheet file may be downloaded here without warranties.

Datasheet ID: AD9941BSTZ 517795