LTC6401-8
13
64018f
TYPICAL APPLICATIONS
Demo Circuit 987B Schematic (Test Circuit A)
T1
(2)
T3
TCM 4:19
1:4
VERSION IC R3 R4 T1 SL1 SL2 SL3
T4
TCM 4:19
1:4
T2
TCM 4:19
1:4
-E LTC6401CUD-8 200Ω 200Ω MINI-CIRCUITS TCM4-19 (1:4) 6dB 8dB 2dB
64018 TA02
R10
86.6Ω
R8
(1)
R7
(1)
R9
86.6Ω
C3
0.1μF
C4
0.1μF
C1
0.1μF
C2
0.1μF
LTC6401-8
V
OCM
V
+
V
+
V
V
V
+
V
CC
V
CC
V
ENABLE
+IN
+IN
–IN
–IN –OUT
+OUTF
–OUTF
+OUT
ENABLE DIS
12 11 10 9
1234
5
6
7
8
16
15
14
13
SL1
(2)
SL2
(2)
J2
–IN
J1
+IN
J5
–OUT
SL3
(2)
J4
+OUT
C22
0.1μF
C21
0.1μF
C18
0.1μF
C13
0.1μF
C17
1000pF
R16
0Ω
TP2
V
CC
2.85V TO 3.5V
13
2
JP1
V
CC
V
CC
V
CC
C12
1000pF
C9
1000pF
C10
0.1μF
C15
1μF
V
CC
C14
4.7μF
C7
0.1μF
R4
(2)
1
3
2
3
1
2
6
4
4
6
TP5
V
OCM
R2
(1)
R1
0Ω
R3
(2)
J6
TEST IN
C19
0.1μF
1
3
2
6
4
C20
0.1μF
R21
(1)
R22
(1)
R20
1k
R19
1.5k
R14
(1)
R13
0Ω
C6
0.1μF
C5
0.1μF
C24
0.1μF
C23
0.1μF
J7
TEST OUT
NOTE: UNLESS OTHERWISE SPECIFIED.
(1) DO NOT STUFF.
(2)
SL = SIGNAL LEVEL
3
1
2
4
6
TP3
GND
R17
0Ω
R25
0Ω
R18
0Ω
R26
0Ω
R12
0Ω
R11
(1)
R24
(1)
R6
0Ω
R5
(1)
0dB
LTC6401-8
14
64018f
TYPICAL APPLICATIONS
Test Circuit B, 4-Port Analysis
0.1μF
13
64018 TA03
1
V
+
2
V
OCM
14
7
15
+OUT
+OUTF
–OUTF
–OUT
+IN
IN+ OUT–
IN– OUT+
+IN
–IN
–IN
516
R
G
200Ω
R
OUT
12.5Ω
R
F
500Ω
R
G
200Ω
R
F
500Ω
6
4
V
3
V
+
V
OCM
V
+
V
+
12
V
11
ENABLE
9
V
10
V
+
COMMON
MODE CONTROL
1/2
AGILENT
E5O71A
BIAS CONTROL
8
R
OUT
12.5Ω
37.4Ω
37.4Ω
R
FILT
50Ω
R
FILT
50Ω
C
FILT
2.7pF
1000pF
0.1μF
0.1μF
0.1μF
PORT 3
(50Ω)
PORT 4
(50Ω)
1/2
AGILENT
E5O71A
133Ω
0.1μF
0.1μF
PORT 1
(50Ω)
PORT 2
(50Ω)
0.1μF
1000pF
LTC6401-8
15
64018f
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
PACKAGE DESCRIPTION
3.00 ± 0.10
(4 SIDES)
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1.45 ± 0.05
(4 SIDES)
NOTE:
1. DRAWING CONFORMS TO JEDEC PACKAGE OUTLINE MO-220 VARIATION (WEED-2)
2. DRAWING NOT TO SCALE
3. ALL DIMENSIONS ARE IN MILLIMETERS
4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
5. EXPOSED PAD SHALL BE SOLDER PLATED
6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION
ON THE TOP AND BOTTOM OF PACKAGE
PIN 1
TOP MARK
(NOTE 6)
0.40 ± 0.10
BOTTOM VIEW—EXPOSED PAD
1.45 ± 0.10
(4-SIDES)
0.75 ± 0.05
R = 0.115
TYP
0.25 ± 0.05
1
PIN 1 NOTCH R = 0.20 TYP
OR 0.25 × 45° CHAMFER
15 16
2
0.50 BSC
0.200 REF
2.10 ± 0.05
3.50 ± 0.05
0.70 ±0.05
0.00 – 0.05
(UD16) QFN 0904
0.25 ±0.05
0.50 BSC
PACKAGE OUTLINE
UD Package
16-Lead Plastic QFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1691)

LTC6401IUD-8#PBF

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers 3GHz Low Noise/Low Distortion Differential Amp
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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