OVP U4 5 3 JP1 OVP GND 2 NC7SV86P5X 1 4 2 3 1 C1 0.1uF OVP 20 U2 VCC B1 A1 3 A0 2 B0 J1 R5 15 16 50 51 CLKOUTA CLKOUTB 40 OFB 39 9 Ain- 10 GND 11 GND DB15 38 12 ENC+ 13 DB10 33 2 3 4 4 6 6 5 RN1A 33 5 7 33 7 8 8 RN1B 9 9 10 10 1 RN1C 33 10 11 RN1D 33 11 12 12 GND 13 33 13 14 14 RN2A 15 33 15 16 16 RN2B 17 33 17 18 18 RN2C 20 19 33 19 20 20 RN2D 21 RN3A 33 21 22 22 VCC 23 23 24 24 33 25 25 26 26 A7 9 RN3B B6 A6 8 RN3C 33 27 28 7 33 28 A5 RN3D 27 B5 29 30 A4 6 33 30 B4 RN4A 29 31 32 A3 33 32 B3 RN4B 31 5 33 34 4 33 34 A2 RN4C 33 B2 35 36 A1 3 33 36 B1 RN4D 35 37 37 38 38 A0 2 39 39 40 40 T/R 1 GND 10 B7 B0 OE 3201S-40G1 1 4 R17 10K U6 24LC025 2 U5 NC7SV86P5X 1 2 3 4 C14 0.1uF 32 31 30 29 28 2 3 74VCX245BQX OVdd Vdd OGND 34 16 DB9 35 DB11 DB8 DB12 Vdd DB7 36 GND 15 DB6 37 DB13 DB5 DB14 ENC- 14 19 1 5 Ain+ * 1 T/R OE 49 OVdd DA8 DA7 OGND 52 54 55 56 53 DA9 DA10 DA11 57 58 59 61 62 60 OFA DA12 14 41 U1 Vdd C16 0.1uF 46 DA0 GND 17 C15 0.1uF DA4 18 27 5.1 C12 0.01uF 13 17 DB4 R29 47 42 26 ETC1-1-13 R33 100 DA5 43 25 C11 8.2pF R28 49.9 1 DA6 12 DA1 DB3 3 5.1 11 48 33 OGND R4 TBD 17 Vdd DB2 5 4 44 DB1 0.01uF A2 DA2 24 C30 R27 49.9 2 J3 B2 DA3 23 4 16 GND DB0 0.01uF 5 Vdd 6 R26 C10 A3 5 8 T2 6 B3 45 7 ENCODE INPUT A4 4 22 C8 2.2uF DA13 Vcm DA14 GND DA15 Sense 2 3 100 C3 0.01uF 1 21 R8 C9 0.01uF 1K 1 10 10 LVDS * R14 DITH C6 0.01uF B4 15 U3 63 R13 C7 * R12 33.2 ETC1-1-13 7 14 OVP * RAND C28 1 MODE * * 2 5 SHDN R31 1 GND 5 R32 A5 74VCX245BQX 20 2 J2 C5 19 3 B5 3 * T3 18 4 64 3 8 13 19 PGA T1 4 2 9 A6 18 10 R11 33.2 3 L1 VDD GND 2 A7 B6 2.2uF * VDD GND R10 B7 12 3 R9 10 C4 0.01uF ANALOG INPUT R30 11 C2 * R3 JP4 RAND JP3 PGA 1 1 R2 10K 1K R1 10K OPEN VDD 2 R7 JP2 SENSE R6 TBD 3 VDD A0 VCC A1 WP A2 SCL A3 SDA R18 10K R19 10K C13 0.1uF 8 7 6 5 C17 0.1uF C18 0.1uF C19 0.1uF VDD R20 10K R21 10K * Assembly Type 1 GND VDD VERSION TABLE U1 T3 C5 C7,C28 R30,R31,R32 L1 INPUT FREQUENCY Bits Msps 3 2 JP6 DITH GND VDD 2 1 JP5 SHDN 3 OVP VDD R25 VDD E1 + C27 100uF 6.3V opt. VDD +3.3V 1 C23 4.7uF IN 7 6 5 GND DC854D-A LTC2208CUP ETC1-T1 4.7pF 8.2pF 86.6 ohm 56nH 1MHz < Ain < 70MHz 16 130 E3 DC854D-B LTC2208CUP WBC1-1L 1.8pF open open 0 ohm 70MHz < Ain < 140MHz 16 130 E4 DC854D-C LTC2208CUP-14 ETC1-T1 4.7pF 8.2pF 86.6 ohm 56nH 1MHz < Ain < 70MHz 14 130 DC854D-D LTC2208CUP-14 WBC1-1L 1.8pF open open 0 ohm 70MHz < Ain < 140MHz 14 130 R22 105K U7 8 C22 OUT 1 GND ADJ 2 GND GND 3 SHDN BYP 4 1.0uF CUSTOMER NOTICE LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. C25 0.1uF R23 100K C21 0.01uF LT1763 OVP C20 10uF 6.3V CONTRACT NO. APPROVALS DRAWN June Wu DATE 10/25/04 CHECKED TECHNOLOGY TITLE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC2208 FAMILY 16-BIT HIGH SPEED ADC APPROVED ENGINEER D. Redmayne C26 0.1uF 10/25/04 DESIGNER Thursday, May 11, 2006 SIZE CAGE CODE SCALE: FILENAME: DWG NO REV DC854D SHEET D 1 OF 1