Datasheet AD7453 (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | Pseudo Differential, 555 kSPS, 12-Bit A/D Converter in 8-Lead SOT-23 |
| Páginas / Página | 21 / 5 — AD7453. Parameter. Test Conditions/Comments. A Version1. B Version. Unit |
| Revisión | B |
| Formato / tamaño de archivo | PDF / 429 Kb |
| Idioma del documento | Inglés |
AD7453. Parameter. Test Conditions/Comments. A Version1. B Version. Unit
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AD7453 Parameter Test Conditions/Comments A Version1 B Version
1
Unit
CONVERSION RATE Conversion Time 1.6 µs with a 10 MHz SCLK 16 16 SCLK cycles Track-and-Hold Acquisition Time2 Sine wave input 250 250 ns max Full-scale step input 290 290 ns max Throughput Rate 555 555 kSPS max POWER REQUIREMENTS VDD 2.7/5.25 2.7/5.25 V min/max I 7, DD 8 Normal Mode (Static) SCLK on or off 0.5 0.5 mA typ Normal Mode (Operational) VDD = 4.75 V to 5.25 V 1.5 1.5 mA max VDD= 2.7 V to 3.6 V 1.2 1.2 mA max Full Power-Down Mode SCLK on or off 1 1 µA max Power Dissipation Normal Mode (Operational) VDD = 5 V; 1.55 mW typ for 100 kSPS7 7.25 7.25 mW max VDD = 3 V; 0.64 mW typ for 100 kSPS7 3.3 3.3 mW max Full Power-Down Mode VDD = 5 V; SCLK on or off 5 5 µW max VDD = 3 V; SCLK on or off 3 3 µW max 1 Temperature ranges as follows: A, B versions: –40°C to +85°C. 2 See Termin s ology ection. 3 Analog inputs with slew rates exceeding 27 V/µs (full-scale input sine wave > 3.5 MHz) within the acquisition time may cause an incorrect result to be returned by the converter. 4 A small dc input is applied to VIN– to provide a pseudo ground for VIN+. 5 The AD7453 is functional with a reference input in the range 100 mV to VDD. 6 Guaranteed by characterization. 7 See Power vs. Thro sectio ughput Rate n. 8 Measured with a full-scale dc input. Rev. B | Page 4 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY AD7453–TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM THE ANALOG INPUT Analog Input Structure DIGITAL INPUTS REFERENCE SERIAL INTERFACE Timing Example 1 MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE MICROPROCESSOR AND DSP INTERFACING AD7453 to ADSP-21xx AD7453 to TMS320C5x/C54x AD7453 to DSP56xxx APPLICATION HINTS Grounding and Layout EVALUATING THE AD7453’S PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
AD7453 Parameter Test Conditions/Comments A Version1 B Version
1
Unit
CONVERSION RATE Conversion Time 1.6 µs with a 10 MHz SCLK 16 16 SCLK cycles Track-and-Hold Acquisition Time2 Sine wave input 250 250 ns max Full-scale step input 290 290 ns max Throughput Rate 555 555 kSPS max POWER REQUIREMENTS VDD 2.7/5.25 2.7/5.25 V min/max I 7, DD 8 Normal Mode (Static) SCLK on or off 0.5 0.5 mA typ Normal Mode (Operational) VDD = 4.75 V to 5.25 V 1.5 1.5 mA max VDD= 2.7 V to 3.6 V 1.2 1.2 mA max Full Power-Down Mode SCLK on or off 1 1 µA max Power Dissipation Normal Mode (Operational) VDD = 5 V; 1.55 mW typ for 100 kSPS7 7.25 7.25 mW max VDD = 3 V; 0.64 mW typ for 100 kSPS7 3.3 3.3 mW max Full Power-Down Mode VDD = 5 V; SCLK on or off 5 5 µW max VDD = 3 V; SCLK on or off 3 3 µW max 1 Temperature ranges as follows: A, B versions: –40°C to +85°C. 2 See Termin s ology ection. 3 Analog inputs with slew rates exceeding 27 V/µs (full-scale input sine wave > 3.5 MHz) within the acquisition time may cause an incorrect result to be returned by the converter. 4 A small dc input is applied to VIN– to provide a pseudo ground for VIN+. 5 The AD7453 is functional with a reference input in the range 100 mV to VDD. 6 Guaranteed by characterization. 7 See Power vs. Thro sectio ughput Rate n. 8 Measured with a full-scale dc input. Rev. B | Page 4 of 20 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY AD7453–TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM THE ANALOG INPUT Analog Input Structure DIGITAL INPUTS REFERENCE SERIAL INTERFACE Timing Example 1 MODES OF OPERATION NORMAL MODE POWER-DOWN MODE POWER-UP TIME POWER VS. THROUGHPUT RATE MICROPROCESSOR AND DSP INTERFACING AD7453 to ADSP-21xx AD7453 to TMS320C5x/C54x AD7453 to DSP56xxx APPLICATION HINTS Grounding and Layout EVALUATING THE AD7453’S PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE