DC1638A - Schematic

5
4
3
2
1
REVISION HISTORY
ECO
-
3.3V
LTC5587IDD
C8 1uF
TP5
OVDD - EXT
1
JP3 OVDD
1
3
3.3V EXT
2
SDO
VDD
SCK
VREF
2
3.3V
3
4
C4
1000PF
TP13
GND
ISO_7V_UNREG
ISO_5V/3.3V_REG
IS0_CS/
ISO_SCK/SCL
ISO_SDA/MOSI
ISO_MISO
EE_VCC
EE_SDA
EE_SCL
EE_GND
B
VCC
DATE
4-12-10
D
VREG
C7 1uF
10
TP4
VREF_EXT
EXT
C10
(OPT)
TP8
EN
TP10
VCC
2.7V - 3.6V
9
vcc
8
C18
1uF
0603
C6 1uF
C
1
2
RF
L1
7
J1
RFIN
1.5nH
C2 1000pF
C1
1.8pF
R1
68
0402
TP11
GND
6
4
7
5
10
V+
11
R2
4.99K
R3
4.99K
R4
4.99K
12
8
14
7
6
5
C14
0.01uF
0603
1
U3
VCC
A0
WP
A1
SCL
A2
SDA VSS
+
C11
10uF
3528
1
2
SDL
1. ALL RESISTORS ARE IN 0603.
ALL CAPACITORS ARE IN 0402.
2. INSTALL SHUNTS AS SHOWN.
VIN
OUT
GND
SHDN BYP
TP14
3.3V
5
4
C12
0.01uF
0603
C13
1uF
0603
VCC
C17
10uF
3528
VREG
U4
1
2
3
VIN
OUT
GND
SHDN BYP
C15
0.01uF
0603
4
LT1761ES5-1.8V
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.
3
TP15
VREG
5
C16
1uF
0603
R5
(OPT)
0402
CONTRACT NO.
APPROVALS
PCB DES.
ENG.
TECHNOLOGY
H.Z.
ANDY M.
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900 www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
6GHz RMS POWER DETECTOR WITH INTEGRATED 12-BIT SERIAL ADC
SIZE
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
4
B
LT1761ES5-3.3
SCL
A
3
4
0.036 VIA
TESTPOINTS
NOTE: UNLESS OTHERWISE SPECIFIED
2
3
24LC025-I/ST
3.3V
U2
9
+
5
ANDY M.
CSQ
C3
0.01uF
ISO_GND
ISO_GND
6
3
8
13
ISO_GND
GPIO1
GND
APPROVED
PRODUCTION
TP2
VDD_EXT
JP2 VREF
1
C9 100pF
TP12
V+
HD2X7-079
VOUT
GND
J2
EN
3
11
13
CONV
5
OVDD
12
C
1uF
CONV
VOUT
C5
TP9
DESCRIPTION
VREG
TP3
2
SCK
U1
EXT
2
3.3V
TP1
SDO
3
JP1 VDD
3
1
D
REV
DATE:
2
IC NO.
REV
LTC5587IDD
3
DEMO CIRCUIT 1638A
Monday, August 02, 2010
SHEET
1
1 OF 1
A
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