Datasheet AD9221, AD9223, AD9220 (Analog Devices) - 4

AD9221/AD9223/AD9220 SWITCHING SPECIFICATIONS (TMIN to TMAX with AVDD = 5 V, DVDD = 5 V, CL = 20 pF) Parameter Symbol AD9221 AD9223 AD9220 Unit
Clock Period* tC 667 333 100 ns min CLOCK Pulsewidth High tCH 300 150 45 ns min CLOCK Pulsewidth Low tCL 300 150 45 ns min Output Delay tOD 8 8 8 ns min 13 13 13 ns typ 19 19 19 ns max Pipeline Delay (Latency) 3 3 3 Clock Cycles *The clock period may be extended to 1 ms without degradation in specified performance @ 25 °C. Specifications subject to change without notice.
S1 S2 ANALOG t S4 C INPUT t t S3 CH CL INPUT CLOCK tOD DATA DATA 1 OUTPUT
Figure 1. Timing Diagram
ABSOLUTE MAXIMUM RATINGS* THERMAL CHARACTERISTICS With
Thermal Resistance
Respect
28-Lead SOIC
Parameter to Min Max Unit
␪JA = 71.4°C/W ␪JC = 23°C/W AVDD AVSS –0.3 +6.5 V 28-Lead SSOP DVDD DVSS –0.3 +6.5 V ␪JA = 63.3°C/W AVSS DVSS –0.3 +0.3 V ␪JC = 23°C/W AVDD DVDD –6.5 +6.5 V REFCOM AVSS –0.3 +0.3 V CLK AVSS –0.3 AVDD + 0.3 V
ORDERING GUIDE
Digital Outputs DVSS –0.3 DVDD + 0.3 V
Temperature Package Package
VINA, VINB AVSS –0.3 AVDD + 0.3 V
Model Range Description Option
VREF AVSS –0.3 AVDD + 0.3 V SENSE AVSS –0.3 AVDD + 0.3 V AD9221AR –40°C to +85°C 28-Lead SOIC R-28 CAPB, CAPT AVSS –0.3 AVDD + 0.3 V AD9223AR –40°C to +85°C 28-Lead SOIC R-28 Junction Temperature 150 °C AD9220AR –40°C to +85°C 28-Lead SOIC R-28 Storage Temperature –65 +150 °C AD9221ARS –40°C to +85°C 28-Lead SSOP RS-28 Lead Temperature AD9223ARS –40°C to +85°C 28-Lead SSOP RS-28 (10 sec) 300 °C AD9220ARS –40°C to +85°C 28-Lead SSOP RS-28 AD9221-EB Evaluation Board *Stresses above those listed under Absolute Maximum Ratings may cause perma- AD9223-EB Evaluation Board nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational AD9220-EB Evaluation Board sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may effect device reliability.
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 AD9221/AD9223/AD9220 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. –4– REV. E Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS DC SPECIFICATIONS AC SPECIFICATIONS DIGITAL SPECIFICATIONS SWITCHING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL CHARACTERISTICS ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS DEFINITIONS OF SPECIFICATIONS Integral Nonlinearity (INL) Differential Nonlinearity (DNL, No Missing Codes) Zero Error Gain Error Temperature Drift Power Supply Rejection Aperture Jitter Aperture Delay Signal-to-Noise and Distortion (S/N+D, SINAD) Ratio Effective Number of Bits (ENOB) Total Harmonic Distortion (THD) Signal-to-Noise Ratio (SNR) Spurious Free Dynamic Range (SFDR) Typical Performance Characteristics INTRODUCTION ANALOG INPUT AND REFERENCE OVERVIEW ANALOG INPUT OPERATION REFERENCE OPERATION DRIVING THE ANALOG INPUTS Introduction SINGLE-ENDED MODE OF OPERATION DC COUPLING AND INTERFACE ISSUES Simple Op Amp Buffer Op Amp with DC Level Shifting AC COUPLING AND INTERFACE ISSUES Simple AC Interface Alternative AC Interface Op Amp Selection Guide DIFFERENTIAL MODE OF OPERATION REFERENCE CONFIGURATIONS USING THE INTERNAL REFERENCE Single-Ended Input with 0 to 2 VREF Range Single-Ended or Differential Input, VCM = 2.5 V VINA Resistor Programmable Reference USING AN EXTERNAL REFERENCE Variable Input Span with VCM = 2.5 V Single-Ended Input with 0 to 2 VREF Range Low Cost/Power Reference DIGITAL INPUTS AND OUTPUTS Digital Outputs Out Of Range (OTR) Digital Output Driver Considerations (DVDD) Clock Input and Considerations GROUNDING AND DECOUPLING Analog and Digital Grounding Analog and Digital Supply Decoupling APPLICATIONS Direct IF Down Conversion Using the AD9220 Multichannel Data Acquisition with Autocalibration OUTLINE DIMENSIONS Revision History