Datasheet LTC6943 (Analog Devices) - 7

LTC6943
U U W U APPLICATIO S I FOR ATIO
12 V+ = 15V 10 V– = 0V 8 V+ = 10V V– = 0V OUTSIDE FOIL 6 CS 1 4 2 V+ = 5V CHARGE INJECTION (pCb) V– = 0V 2 PRINTED CIRCUIT LTC6943 BOARD AREA 6943 • AI05 0 0 2 4 6 8 10 12 14 16 VIN (V) 6943 • AI04
Figure 4. Individual Switch Charge Injection Figure 5. Printed Circuit Board Layout vs Input Voltage Showing Shielding the Sampling Capacitor U TYPICAL APPLICATIO S Divide by 2 Multiply by 2 Ultra Precision Voltage Inverter
1/2 LTC6943 1/2 LTC6943 1/2 LTC6943 V 6 OUT = –VIN 7 V 6 IN 7 VOUT = VIN/2 V 6 OUT 7 VIN 1µF 9 9 9 1µF 1µF 1µF 1µF 1µF 10 10 10 VIN 11 12 11 12 11 12 14 15 14 15 14 15 0.01µF 0.01µF 0.01µF VOUT = –VIN ±2ppm VOUT = VIN/2 ± 1ppm VOUT = 2VIN ± 5ppm V– < VIN < V+ 0 ≤ VIN ≤ V+ 0 ≤ VIN ≤ V+ /2 V+ = +5V, V– = –5V 3 ≤ V+ ≤ 18V 6943 • TA03 3 6943 • TA02 ≤ V+ ≤ 18V 6943 • TA03 6943f 7