Datasheet

LTC1864/LTC1865
16
18645fb
APPLICATIONS INFORMATION
LTC1864 Evaluation Circuit Schematic
U12B 74AC109
39 37 35 33 31 29 27 25 23 21 19 17 15 13 11
9 7 5 3 1
40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
–
+
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
JP8
246 135
JP9
246 135
2 3 4 1 5
6 7 8
10 9 8
5V
DIG
5V
DIG
5V
DIG
5V
DIG
5V
DIG
15V
–15V
5V
DIG
5V
DIG
5V
AN
5V
DIG
5V
DIG
5V
DIG
C16 0.1μF
C23
0.1μF
C5
0.1μF
C6
0.1μF
C24
0.1μF
C18
0.1μF
C17 0.1μF
5V
DIG
5V
DIG
5V
DIG
C13 0.1μF
C26 10μF 6.3V 1206
C14 0.1μF
U12A 74AC109
U10 LTC1799
RESET CLK P0 P1 P2 P3 ENP GND
V
CC
RCO
Q0 Q1 Q2 Q3
ENT
LO
U6 74HC163AD
J K CLK CLR PRE
Q Q
GND
V
CC
1 2 3
5 4
V
+
GND SET
DIV
14 13 12 15 11
J K CLK CLR PRE
Q Q
GND
V
CC
16
16
U9B 74AC00 U9A 74AC00
U13B 74AC32
RESET CLK P0 P1 P2 P3 ENP GND
V
CC
RCO
Q0 Q1 Q2 Q3
ENT
LO
U7 74HC163AD
R10 20k
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10
9
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10
9
J4 3201S40G1
QB QC
QD
QE
QF
QG QH
GND
V
CC
QA A OENB LCLK SCLK RESET SQH
RN1 330
QB QC
QD
QE
QF
QG QH
GND
V
CC
QA A OENB LCLK SCLK RESET SQH
R7 51Ω 0PT
R9 51Ω
R8 51Ω 0PT
C9 180pF
C10 680pF OPT
C8 1000pF OPT
C12 1000pF OPT
C7 390pF
C11 390pF
C27 0.1μF
C1 0.1μF
C4
0.1μF
C21
47pF
C22
47pF
C25
0.1μF
5V
DIG
C15
0.1μF
5V
DIG
C19
0.1μF
C2 1μF 10V 0805
C3
10μF
6.3V
1206
JP3
JP2 JP1
R1
510Ω
R3
2Ω
R2
510Ω
V
IN
V
OUT
GND
U1 LT1021-5
V
IN
V
OUT
GND
R4
2Ω
15V
15V
IN
+
IN
+
AGND
IN
–
IN
–
V
REF
IN
+
IN
–
GND
V
CC
SCK
SDO
CONV
U8A 74AC14
U8B 74AC14
U8E 74AC14
U8D 74AC14
U8F 74AC14
OUT
15V
5V
AN
U4 74HC595ADT U5 74HC595ADT
U9C 74AC00
U9D 74AC00
U13A 74AC32
U13D 74AC32
U13C 74AC32
ANALOG GROUND PLANE
CLK
JP6
JP7
JP4
J1
J2
E1
E8 E9
U2
OPT
U3 LTC1864CMS8
1 2 3 4
8 7 6 5
R6
402Ω
1%
R5
402Ω, 1%
1 2 3 4
8 7 6 5
2
21 21
2
1
2
1
21
3
3 2 1
21
4
6
1
2
3
JP5
CONV DGND DGND DOUT CLKOUT CLKIN
ENABLE DATA
U8C 74AC14
E2 E3 E7 E6 E4 E5
J3
NOTES: UNLESS OTHERWISE SPECIFIED INSTALL SHUNTS ON JP1, JP3-JP7 PIN 1 AND PIN2; ON JP8 AND JP9 PIN 2 AND PIN 4, PIN 3 AND PIN 5.
18645 AI1
R12
10k