Datasheet AD7476, AD7477, AD7478 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 8-Bit, 1 MSPS, Low Power Successive Approximation ADC Which Operates From A Single 2.35 V to 5.25 V Power Supply |
| Pages / Page | 24 / 4 — AD7476/AD7477/AD7478. Parameter. A Version1,2. B Version1,2 S. … |
| Revision | F |
| File Format / Size | PDF / 341 Kb |
| Document Language | English |
AD7476/AD7477/AD7478. Parameter. A Version1,2. B Version1,2 S. Version1,2. Unit. Test Conditions/Comments
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AD7476/AD7477/AD7478 Parameter A Version1,2 B Version1,2 S Version1,2 Unit Test Conditions/Comments
CONVERSION RATE Conversion Time 0.8 1.33 1.33 μs max 16 SCLK cycles Track-and-Hold Acquisition Time 500 500 500 ns max Full-scale step input 350 400 400 ns max Sine wave input ≤ 100 kHz Throughput Rate 1000 600 600 kSPS max See Serial Interface section POWER REQUIREMENTS VDD 2.35/5.25 2.35/5.25 2.35/5.25 V min/max IDD Digital I/Ps = 0 V or VDD Normal Mode (Static) 2 2 2 mA typ VDD = 4.75 V to 5.25 V, SCLK on or off 1 1 1 mA typ VDD = 2.35 V to 3.6 V, SCLK on or off Normal Mode (Operational) 3.5 3 3 mA max VDD = 4.75 V to 5.25 V, fSAMPLE = fSAMPLEMAX6 1.6 1.4 1.4 mA max VDD = 2.35 V to 3.6 V, fSAMPLE = fSAMPLEMAX6 Full Power-Down Mode 1 1 1 μA max SCLK off 80 80 80 μA max SCLK on Power Dissipation7 Normal Mode (Operational) 17.5 15 15 mW max VDD = 5 V, fSAMPLE = fSAMPLEMAX6 4.8 4.2 4.2 mW max VDD = 3 V, fSAMPLE = fSAMPLEMAX6 Full Power-Down 5 5 5 μW max VDD = 5 V, SCLK off 3 3 3 μW max VDD = 3 V, SCLK off 1 Temperature range for A and B versions is −40°C to +85°C; temperature range for S version is −55°C to +125°C. 2 Operational from VDD = 2.0 V. 3 See the Terminology section. 4 Maximum B and S version specifications apply as typical figures when VDD = 5.25 V. 5 Guaranteed by characterization. 6 For A version: fSAMPLEMAX = 1 MSPS; B and S versions: fSAMPLEMAX = 600 kSPS. 7 See the Power vs. Throughput Rate section. Rev. F | Page 4 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7476 SPECIFICATIONS AD7477 SPECIFICATIONS AD7478 SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM Analog Input Digital Input MODES OF OPERATION Normal Mode Power-Down Mode Power-Up Time POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7476/AD7477/AD7478 to TMS320C5x/C54x Interface AD7476/AD7477/AD7478 to ADSP-21xx Interface AD7476/AD7477/AD7478 to DSP56xxx Interface AD7476/AD7477/AD7478 to MC68HC16 Interface OUTLINE DIMENSIONS ORDERING GUIDE
AD7476/AD7477/AD7478 Parameter A Version1,2 B Version1,2 S Version1,2 Unit Test Conditions/Comments
CONVERSION RATE Conversion Time 0.8 1.33 1.33 μs max 16 SCLK cycles Track-and-Hold Acquisition Time 500 500 500 ns max Full-scale step input 350 400 400 ns max Sine wave input ≤ 100 kHz Throughput Rate 1000 600 600 kSPS max See Serial Interface section POWER REQUIREMENTS VDD 2.35/5.25 2.35/5.25 2.35/5.25 V min/max IDD Digital I/Ps = 0 V or VDD Normal Mode (Static) 2 2 2 mA typ VDD = 4.75 V to 5.25 V, SCLK on or off 1 1 1 mA typ VDD = 2.35 V to 3.6 V, SCLK on or off Normal Mode (Operational) 3.5 3 3 mA max VDD = 4.75 V to 5.25 V, fSAMPLE = fSAMPLEMAX6 1.6 1.4 1.4 mA max VDD = 2.35 V to 3.6 V, fSAMPLE = fSAMPLEMAX6 Full Power-Down Mode 1 1 1 μA max SCLK off 80 80 80 μA max SCLK on Power Dissipation7 Normal Mode (Operational) 17.5 15 15 mW max VDD = 5 V, fSAMPLE = fSAMPLEMAX6 4.8 4.2 4.2 mW max VDD = 3 V, fSAMPLE = fSAMPLEMAX6 Full Power-Down 5 5 5 μW max VDD = 5 V, SCLK off 3 3 3 μW max VDD = 3 V, SCLK off 1 Temperature range for A and B versions is −40°C to +85°C; temperature range for S version is −55°C to +125°C. 2 Operational from VDD = 2.0 V. 3 See the Terminology section. 4 Maximum B and S version specifications apply as typical figures when VDD = 5.25 V. 5 Guaranteed by characterization. 6 For A version: fSAMPLEMAX = 1 MSPS; B and S versions: fSAMPLEMAX = 600 kSPS. 7 See the Power vs. Throughput Rate section. Rev. F | Page 4 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7476 SPECIFICATIONS AD7477 SPECIFICATIONS AD7478 SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ADC TRANSFER FUNCTION TYPICAL CONNECTION DIAGRAM Analog Input Digital Input MODES OF OPERATION Normal Mode Power-Down Mode Power-Up Time POWER VS. THROUGHPUT RATE SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7476/AD7477/AD7478 to TMS320C5x/C54x Interface AD7476/AD7477/AD7478 to ADSP-21xx Interface AD7476/AD7477/AD7478 to DSP56xxx Interface AD7476/AD7477/AD7478 to MC68HC16 Interface OUTLINE DIMENSIONS ORDERING GUIDE
