LTC1285/LTC1288 WBLOCK DIAGRAM CS/SHDN V CLK CC (VCC/ V REF) (DIN) BIAS AND SERIAL PORT DOUT SHUTDOWN CIRCUIT IN+ (CH0) CSAMPLE – SAR IN– (CH1) + MICROPOWER COMPARATOR CAPACITIVE DAC LTC1285/88 • BD V GND REF PIN NAMES IN PARENTHESES REFER TO THE LTC1288 TEST CIRCUITSLoad Circuit for tdDO, tr and tfVoltage Waveforms for DOUT Rise and Fall Times, tr, tf 1.4V VOH DOUT VOL 3k DOUT TEST POINT tr tf LTC1285/88 • TC02 100pF LTC1285/88 • TC01 Voltage Waveforms for DLoad Circuit for tOUT Delay Times, tdDOdis and ten TEST POINT CLK VIL t VCC tdis WAVEFORM 2, ten dDO 3k DOUT VOH tdis WAVEFORM 1 D 100pF OUT VOL LTC1285/88 • TC04 LTC1285/88 • TC03 8