ISL28276EVAL1Z Intersil, ISL28276EVAL1Z Datasheet - Page 2

• Manufacturer Part Number: ISL28276EVAL1Z
• Description: EVALUATION BOARD FOR ISL28276
• Manufacturer: Intersil

Specifications of ISL28276EVAL1Z

• Channels Per Ic: 2 - Dual
• Amplifier Type: General Purpose
• Output Type: Single-Ended, Rail-to-Rail
• Slew Rate: 0.17 V/µs
• Current - Output / Channel: 31mA
• Operating Temperature: -40°C ~ 125°C
• Current - Supply (main Ic): 120µA
• Voltage - Supply, Single/dual (±): 2.4 V ~ 5.5 V, ±1.2 V ~ 2.75 V
• Board Type: Fully Populated
• Utilized Ic / Part: ISL28276
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -

User-Selectable Options
Component pads are included to enable a variety of
user-selectable circuits to be added to the amplifier inputs,
the VREF input, outputs and the amplifier feedback loops.
The outputs (Figure 3) have additional resistor and capacitor
placements for loading.
A voltage divider and filter option (Figure 4) can be added to
establish a power supply-tracking common mode reference
at the VREF input. The inverting and non-inverting inputs
have additional resistor placements for adding input
attenuation, or to establish input DC offsets through the
VREF pin.
ISL2827xEVAL1Z Components Parts List
R2-R5, R8-R10, R12, R16-R19,
R24-R27, R29, R31, R34-R39,
R32, R40, R46-R49, R55, R56
R42-R44, R50-R52, R57, R58
INA1+
INA2+
INA1-
INA2-
R1, R11, R13-R15, R24,R25,
R6, R7, R20-R23, R33, R53,
U1 (ISL28276EVAL1Z)
U1 (ISL28278EVAL1Z)
J5
J6
J7
J8
J6
J7
R28, R30, R41, R45
5
DEVICE NUMBER
OUT
C9, C12, C17
2
2
2
2
1
1
1
1
C10, C18
C6-C25
D1, D2
R54
D3
1
1
R51 DNP
C19 OPEN
FIGURE 3. 1/2 OUTPUT STAGE
OPEN
OPEN
OPEN
C2
C3
C2
C3
FIGURE 4. 1/2 INPUT STAGE
RINA2-
RINA2+
1
2
RINA2+
RINA2-
1
RINA1+
DNP
DNP
RINA1-
DNP
DNP
2
R8
2
R9
R8
R9
R14
R13
R13
R14
0
0
2
R53 10k
1
OPEN
OPEN
C7
1
1
C7
RINA-
OPEN
2
R21
R21
10k
2
CAP-TANTALUM, SMD, D, 4.7µF, 50V, 10%, LOW ESR, ROHS
CAP, SMD, 0603, 0.1µF, 25V, 10%, X7R, ROHS
CAP, SMD, 0603, DNP-PLACE HOLDER, ROHS
DIODE-RECTIFIER, SMD, SOD-123, 2P, 40V, 0.5A, ROHS
DIODE-ZENER, SMD, OD-123, 2P, 5.1V, 350mV, ROHS
ISL28276FAZ, IC-RAIL-TO-RAIL PRECISION OP AMP, 16P, QSOP, ROHS
ISL28278FAZ, IC-RAIL-TO-RAIL PRECISION OP AMP, 16P, QSOP, ROHS
RESISTOR, SMD, 0603, 0.1%, MF, DNP-PLACE HOLDER
RES, SMD, 0603, 0Ω, 1/10W, TF, ROHS
RES, SMD, 0603, 10k, 1/10W, 1%, TF, ROHS
RES, SMD, 0603, 100k, 1/10W, 1%, TF, ROHS
ROUTA
C6
C6
RINA+
RINA+
2
R55
R22
R22
10K
10k
R55
0
R57 DNP
2
2
(Figures 3 to 5)
1
RREFA+
RREFA-
100k
R30
R30
RGA+
R31
100k
R31
1
2 34
REF1
RE
J15
J15
5
Application Note 1345
OUTA
VREF
J4
IN-
IN+
RREF
DESCRIPTION
In the standard configuration (Figure5), R
feedback resistors for the two independent amplifiers, set for
AV = 10. Resistors R
the output circuit (Figure 3)
components, R
and C
other applications such as cascaded gain stages, active
feedback loops, etc.
IN- A
IN+ B
IN- B
IN+ A
18
R37
DNP
R39
DNP
allow the user to configure the board for a variety of
FIGURE 5. OPTICAL COMPONENTS
INA+
INB+
ENA
ENB
R36
DNP
V-
R38
DNP
34
11
12
5
6
7
to R
47
+
+
-
-
39
15
14
13
and R
4
3
, R
RFB1
OUTA
OUTB
INB-
INA-
V+
.
42
Power supply decoupling
Power supply decoupling
User selectable capacitors - not
Reverse power protection
Reverse power protection
User selectable resistors - not
0Ω user selectable resistors
RG gain resistors
The additional unpopulated
populated
populated
RF gain resistors
CFB, DNP
CFA, DNP
C13
RG
48
R43, DNP
to R
RFA, R45, 100k
R41, 100k
DNP
DIFF
R42
DNP
R44
C11
connect the DUT output to
44
, C
COMMENTS
10
41
C14
CLA
DNP
C15
CLB
DNP
, C
and R
11
R47, 0
RSA
RSB
R48, 0
, C
13
August 2, 2007
45
to C
are RF
AN1345.0
OUT A
OUT B
15