Datasheet LTC6906 (Analog Devices) - 6

LTC6906
TEST CIRCUIT
EQUIVALENT CIRCUIT OF OSCILLOSCOPE OR FREQUENCY COUNTER PROBE LTC6906 CTEST SUPPLY V+ OUT VOLTAGE GND GRD C RPROBE PROBE 10M DIV SET RSET 0.01% 10ppm/°C 6906 F01 CTEST = 1/(1/5pF – 1/CPROBE) = 7.5pF FOR A 15pF SCOPE PROBE
Figure 1. Test Circuit with 5pF Effective Load EQUIVALENT INPUT AND OUTPUT CIRCUITS
V+ V+ V+ 6 6 6 200Ω 20Ω TOTAL OUTPUT 1k SET GRD RESISTANCE 4 5 800pF GND GND GND 2 2 2 6906 F02 6906 F03 6906 F04
Figure 2. V+ Pin Figure 3. SET Pin Figure 4. GRD Pin
V+ V+ 6 6 5M fOUT DIV OUT 300Ω 3 1 5M GND GND 2 2 6906 F05 6906 F06
Figure 5. DIV Pin Figure 6. OUT Pin
6906fc 6