Datasheet AD7992 (Analog Devices) - 6

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AD7992 I2C TIMING SPECIFICATIONS
Guaranteed by initial characterization. All values measured with the input filtering enabled. CB refers to the capacitive load on the bus line. tr and tf measured between 0.3 VDD and 0.7 VDD. High speed mode timing specifications apply to the AD7992-1 only. Standard and fast mode timing specifications apply to both the AD7992-0 and the AD7992-1. See Figure 2. Unless otherwise noted, VDD = 2.7 V to 5.5 V; REFIN = 2.5 V to VDD; TA =TMIN to TMAX.
Table 3. Limit at TMIN, TMAX Parameter Conditions Min Max Unit Description
fSCL Standard mode 100 kHz Serial clock frequency Fast mode 400 kHz High speed mode CB = 100 pF max 3.4 MHz CB = 400 pF max 1.7 MHz t1 Standard mode 4 µs tHIGH, SCL high time Fast mode 0.6 µs High speed mode CB = 100 pF max 60 ns CB = 400 pF max 120 ns t2 Standard mode 4.7 µs tLOW, SCL low time Fast mode 1.3 µs High speed mode CB = 100 pF max 160 ns CB = 400 pF max 320 ns t3 Standard mode 250 ns tSU;DAT, data setup time Fast mode 100 ns High speed mode 10 ns t 1 4 Standard mode 0 3.45 µs tHD;DAT, data hold time Fast mode 0 0.9 µs High Speed mode CB = 100 pF max 0 702 ns CB = 400 pF max 0 150 ns t5 Standard mode 4.7 µs tSU;STA, setup time for a repeated START condition Fast mode 0.6 µs High Speed mode 160 ns t6 Standard mode 4 µs tHD;STA, hold time for a repeated START condition Fast mode 0.6 µs High speed mode 160 ns t7 Standard mode 4.7 µs tBUF, bus free time between a STOP and a START condition Fast mode 1.3 µs t8 Standard mode 4 µs tSU;STO, setup time for STOP condition Fast mode 0.6 µs High speed mode 160 ns t9 Standard mode 1000 ns tRDA, rise time of SDA signal Fast mode 20 + 0.1 CB 300 ns High speed mode CB = 100 pF max 10 80 ns CB = 400 pF max 20 160 ns Rev. 0 | Page 5 of 28 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS I2C TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND PIN FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION TYPICAL CONNECTION DIAGRAM ANALOG INPUT INTERNAL REGISTER STRUCTURE ADDRESS POINTER REGISTER CONFIGURATION REGISTER CONVERSION RESULT REGISTER LIMIT REGISTERS ALERT STATUS REGISTER CYCLE TIMER REGISTER SAMPLE DELAY AND BIT TRIAL DELAY SERIAL INTERFACE SERIAL BUS ADDRESS WRITING TO THE AD7992 WRITING TO THE ADDRESS POINTER REGISTER FOR A SUBSEQUENT REA WRITING A SINGLE BYTE OF DATA TO THE ALERT STATUS REGISTER, WRITING TWO BYTES OF DATA TO A LIMITREGISTER OR HYSTERESIS READING DATA FROM THE AD7992 ALERT/BUSY PIN SMBus ALERT PLACING THE AD7992-1 INTO HIGH SPEED MODE THE ADDRESS SELECT (AS) PIN MODES OF OPERATION MODE 1—USING THE /CONVST PIN MODE 2 – COMMAND MODE MODE 3—AUTOMATIC CYCLE MODE OUTLINE DIMENSIONS ORDERING GUIDE