an1395

ISL55036EVAL1Z Evaluation Board User’s Guide
®
Application Note
April 17, 2008
AN1395.0
Introduction
0
• ISL55036EVAL1Z
Reference Documents
• ISL55036 Data Sheet, FN6640.
0
0
R5
V+ (1, 2, 3)
DNP
Ordering Information
R1
DNP
C8
V+OUTPUT (4, 5, 6)
0.1µF
DNP
C6
V+ OUTPUT (1, 2, 3,)
0.1µF
C9
DNP
C4
V+ (4, 5, 6)
0.1µF
C7
C2
R6
4.7µF
C3
The ISL55036 amplifiers are 400MHz GBW operational
amplifiers featuring single supply operation over a voltage
range of 3VDC to 5.5VDC and slew rate of 2500V/µs into a
150Ω load. ISL55036 has an internal gain of 4.
V+
C1
2
0.1µF
C5
J2
D1
3
1
0
GND
R2
J1
The ISL55036EVAL1Z evaluation board is a design platform
containing all the circuitry needed to characterize critical
performance parameters of the ISL55036, Six-channel
high-speed op amps, using a variety of user defined test
circuits.
FIGURE 1. POWER SUPPLY
Evaluation Board Key Features
The ISL55036EVAL1Z is designed to enable the IC to
operate from a single supply (+3VDC to +5.5VDC). The
board is configured for 75Ω load impedance which is
suitable for driving video cables.
1V/us during power-up. Four additional Capacitors, C3, C5,
C7 and C9 are placed close to the IC and provide additional
high frequency filtering. Anti-reverse diode D1 protects the
circuit in the case of accidental polarity reversal.
(See Figure 1).
Power Supplies
Amplifier Configuration
External power connections are made through the +V and
Ground connections on the evaluation board. De-coupling
capacitor C1 reduces the voltage rate-of-rise to less than
ISL55036 contains six high-speed op-amps, which are
separated into two groups of three op-amps each. Each
group is controlled by its own enable pin. The schematic in
Figure 2 shows one of the six op-amps with the components
supplied. The circuit implements a series 75Ω
back-termination for driving 75Ω cables.
GAIN IS INTERNALLY SET TO AV = 4
V+
IN-
R12
VIN
IN+
-
ISL55036
1 of 6
V+
R4
V-
75
VOUT
+
0
R14
49.9
GND
FIGURE 2. BASIC AMPLIFIER CONFIGURATION
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
Application Note 1395
User-selectable Options
Component pads are included to enable a variety of
user-selectable circuits to be added to the amplifier outputs.
The output has additional resistor and capacitance
placements for loading as shown in Figure 3:
OUT
FROM OP-AMP
R44
R45
49.9
0
J18
R46
OUT
(1 of 6)
PT9
DNP
C14
DNP
FIGURE 3. OUTPUT STAGE
ISL55036EVAL1Z Components Parts List
DEVICE NUMBER
DESCRIPTION
COMMENTS
C1
CAP-TANTALUM, SMD, D, 4.7µF, 50V, 10%. LOW ESR, ROHS
Power Supply Decoupling
C3, C5, C7, C9
CAP, SMD, 0603, .01µF, 25V,10%, X7R, ROHS
Power Supply Decoupling
C2, C4, C6, C8
CAP, SMD, 0603,1000pF, 25V,10%, X7R, ROHS
Power Supply Decoupling
Not populated
C10 to C15
CAP, SMD, 0603, DNP-PLACE HOLDER
User selectable output capacitors
Not populated
D1
DIODE-RECTIFIER, SMD, SOD-123, 2P, 40V, 0.5A, ROHS
Reverse Power Protection
U1 (ISL55036EVAL1Z)
ISL55036FUZ, IC- OP AMP, 24P, QFN, ROHS
R3, R4, R7, R8, R53-R56
RESISTOR, SMD, 0603, 0.1%, MF, DNP-PLACE HOLDER
For internal use only
Not populated
R11, R14, R37, R40, R43,R46,
R49, R52
RESISTOR, SMD, 0603, 0.1%, MF, DNP-PLACE HOLDER
User selectable resistors
Not populated
R11, R2, R5, R6, R15, R17, R19, RES, SMD, 0603, 0Ω, 1/16W, tF, ROHS
R21, R23, R25, R27 to R34, R36,
R39, R42, R45, R48, R51, R64
0Ω user selectable resistors
R10, R13, R16, R18, R20, R22,
R24, R26
RES, SMD, 0603, 49.9Ω, 1/10W, 1%, tF, ROHS
Input resistors
R11, R12
RES, SMD, 0603, 75Ω, 1/8W, 1%, tF, ROHS
Output series resistors
R9, R10
RES, SMD, 0603, 10k, 1/10W, 1%, tF, ROHS
Enable pull-up resistors
2
AN1395.0
April 17, 2008
Application Note 1395
ISL55036EVAL1Z Top View
Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to
verify that the Application Note or Technical Brief is current before proceeding.
For information regarding Intersil Corporation and its products, see www.intersil.com
3
AN1395.0
April 17, 2008
ISL55036EVAL1Z Schematic Diagram
J1
J2
V+
GND
R2
R4
C3
1000P
F
PSRR+
C6
V+ OUTPUT(1,2,3,)
IN+2
1000P
F
75
R16
0
1
DNP
DNP
DNP
V+(4,5,6)
OUT 2
R38
C8
R17
49.9
C9
V+ OUTPUT(4,5,6)
0
R27
75
R18
R19
24
23
22
21
20
R21
75
0
25
R23
SEL2
J9
19
18
17
16
15
14
13
DNP
OUT 4
R44
R45
J18
49.9
0
R46
8
9
10
11
12
OUT 5
PT11
C15
DNP
C14
DNP
PT9
PT7
DNP
C13
PT5
DNP
C12
C11
C10
DNP
PT1
75
DNP
PT3
R47
0
0
R32
R28
0
0
75
R25
J10
R26
EP
19
18
17
QFN
16
15
24PIN
14
PACKAGE 13
ISL55036
DNP
0
R24
1
2
3
4
5
6
7
R29
R22
4
3
J17
0
R43
8
9
10
11
12
1
2
3
4
5
6
7
J8
4
3
R42
49.9
75
R20
0
4
3
OUT 3
R41
24
23
22
21
20
J7
IN+6
0
R40
DNP
1000P
F
IN+5
R39
J16
0.01UF
0
IN+4
0
R37
SEL1
J6
IN+3
R36
J15
49.9
J14
R8
C7
0.01UF
OUT 1
R35
(4,5,6)
R7
R15
J5
J13
DNP
V+(1,2,3)
C5
IN+1
VREF2
(4,5,6)
J12
VFER1
(1,2,3)
J11
R48
J19
49.9
R49
0
3
4
4
0.01UF
1
0
1000P
F
C4
R6
0.01UF
REF2
DNP
R5
4
3
ENABLE/
EXT
(4,5,6)
49.9
PSRR+
(1,2,3)
R3
C2
EN
2
10K 1
R13
R1
4.7UF
0
DISABLE
R12
3 S2
REF1
C1
0
2
V+
D1
3
DNP
R14
V+
R11
ENABLE/EXT
(1,2,3)
49.9
ENABLE
(4,5,6)
J4
1
0
R10
4
3
ENABLE
(1,2,3)
J3
DISABLE
3 S1
EN
2
10K 1
R9
DNP
V+
R55
DNP
OUT 6
R50
R51
J20
PT10
49.9
PT4
0
R56
REF1
DNP
DNP
R54
R52
DNP
REF2
3
4
DNP
R53
0
R34
0
0
R33
R31
0
R30
0
THERMAL
R64
DNP
AN1395.0
April 17, 2008
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