Intersil SL71010BM50EV1Z User Manual
User’s Manual
ISL71010BM50EV1Z
High Reliability
User’s Manual: Evaluation Board
Rev 0.00 Oct 2017
USER’S MANUAL
ISL71010BM50EV1Z
Evaluation Board
Oct 24, 2017
1. Overview
The ISL71010BM50EV1Z evaluation board measures the performance of the high precision 5.0V ISL71010B50
voltage reference. The reference has a wide input voltage range from 7V to 30V and an initial accuracy of ±0.05%. The
voltage noise of 4.2µV
makes the ISL71010B50 ideal for high-end applications.
The evaluation board includes voltage input test points (VIN and GND) for a power supply input, as well as a pair of
test points for the output (VOUT and GND). The resistor location designated as R
designated as C
style resistors and C
connected to VOUT by installing a jumper at J1.
allow for VOUT output load testing. The R2 resistor location accepts surface mount or through-hole
3
1.1 Key Features
• Voltage input test points for connection of a power supply
• Convenient output test points to measure VOUT of the voltage reference
•R
and C3 allow for VOUT output load testing
2
• Additional R-C damper network can be connected at VOUT by installing a jumper at J1
in the 0.1Hz to 10Hz range and maximum output voltage temperature coefficient of 10ppm/°C
P-P
and the capacitor location
2
comes populated with a 0.1µF load capacitor. Additionally, an R-C damper network can be
3
UG136
Rev.0.00
1.2 Specifications
This evaluation board has been configured and optimized for the following conditions:
•V
= 7V to 30V
IN
• 10µF and 0.1µF input decoupling capacitors, 1nF compensation capacitor, and 0.1µF load capacitor
•R
load resistance of ≥250Ω
2
• Selectable 10µF and 2.21kΩ damper network at the output by installing a jumper at J1
• Board temperature: +25°C
1.3 Ordering Information
Part Number Output Voltage (V) Description
ISL71010BM50EV1Z 5.0V Evaluation board
1.4 Related Literature
• For a full list of related documents, visit our website
• ISL71010B50
• ISL71010B25
product page
product page
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ISL71010BM50EV1Z 1. Overview
10µF 0.1µF
Chip Select
Serial Clock
Serial Data I/O
VDD VREF
SCLK
SDIO
CSb
OUTxS
GND
DACOUTx
VIN
VREF
0.1µF
OUTxF
DAC
1
2
3
4
DNC
GND
VOUT
TRIM
6
8
7
5
DNC
DNC
COMP
VIN
Figure 1. ISL71010BM50EV1Z Block Diagram
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ISL71010BM50EV1Z 2. Functional Description
2. Functional Description
The ISL71010BM50EV1Z evaluation board provides a simple platform to demonstrate the features and evaluate the
performance of the ISL71010B50 voltage reference. It provides easy access to the pins of the ISL71010B50 IC. The
schematic, bill of materials, and top silkscreen for the board are shown on pages 6
Figures 8
through 18 show performance data taken using the ISL71010BM50EV1Z evaluation board and basic lab
equipment.
The following sections explain how to use the evaluation board.
2.1 Basic Layout of the Evaluation Board
Refer to Figure 3 on page 6 or the actual ISL71010BM50EV1Z evaluation board for the basic layout.
The schematic of the evaluation board is shown in Figure 4 on page 6
ISL71010B50 voltage reference (U1), input decoupling capacitors (C
load capacitor (C
loads. The R
). Different resistor values can be applied at (R2) for testing of the voltage reference at different
3
resistor location accepts surface mount or through-hole style resistors.
2
The power supply leads attach to TP1 and TP2 (VIN, GND). The ISL71010B50 IC requires a DC supply in the
range of 7.0V to 30V for proper operation. The power supply should be capable of delivering 100mA of current.
The output is measured at test points TP3 and TP4 (VOUT, GND), and is best measured with a high precision voltmeter
(such as the Agilent 3458A 8 - 1/2 digit multimeter).
The R-C damper network (R
, C4) is populated and can be connected to the reference output by adding a shunt to
1
the R-C jumper (J1). The damper network improves stability by reducing transient load ringing with high value
(>0.47µF) load capacitance.
. The ISL71010BM50EV1Z contains the
1
through 8.
, C2), a compensation capacitor (C5), and a
2.1.1 Components Parts List
Table 1. Components Parts List
Reference Designator Value Description
C
1
C
2
C
3
C
4
C
5
R
1
R
2
U1 ISL71010BMB50Z SOIC 8 Ld package
J1 DNP Damper jumper
10µF Bypass capacitor
0.01µF Bypass capacitor
0.1µF Load capacitor
10µF Damper capacitor
1nF Compensation capacitor
2.21kΩ Damper resistor
DNP Optional load resistor
2.2 Operating Range
The ISL71010B50 IC requires a VIN DC supply in the range of 7.0V to 30V for proper operation. The power
supply should be capable of delivering 100mA of current.
The ISL71010B50 IC V
load resistor should be selected to be ≥250Ω. Note: With V
≤75mA.
can source 20mA of current and sink -10mA of current. For normal operation the R2
OUT
shorted to ground the IC will limit the current to
OUT
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