User Guide
EVAL-ADR1001
UG-2194

Evaluation Board for the ADR1001 Ultrastable, Buried Zener, Voltage Reference in 20-Terminal LCC

FEATURES

► Easy to carry and power-up pocket calibrator style
► Edge mounted SMA connector
► Simple connection to test equipment and other circuits
► RoHS compliant

EVALUATION KIT CONTENTS

► ADR1001E-EBZ

EQUIPMENT NEEDED

► USB-C-compatible charger/power supply or benchtop lab supply
► Several digit digital multimeters (DMMs) (such as HP3458 or
Keithley 2001)
► 2 banana plug cables or 1 SMA to meter-compatible cable

EVALUATION BOARD PHOTOGRAPH

GENERAL DESCRIPTION

The ADR1001E-EBZ allows the evaluation of the ADR1001, an ultrastable 6.6 V shunt voltage reference with a resistor divider in a 20-terminal LCC package.
Isolated power means that the reference output is effectively floated, removing possible ground loops. The isolation is bridged only by a 1 MΩ resistor.
Power can be supplied via a USB-C cable, or 5 V can be applied to VUSB, or power can be back driven onto the regulator outputs at VPRE or V+. The ultrastable 6.6 V output is divided down to a precision trimmed 5 V, which is routed to both banana jacks and an edge mounted SMA connector.

EVALUATION BOARD QUICK START PROCEDURES

The following sections outline the basic prepopulated configuration of the ADR1001E-EBZ required to test the basic functionality of the device.
POWER SUPPLY CONSIDERATIONS
The evaluation board can be powered using a USB-C charger or other USB-C source. A green LED indicator must be visible.
Alternatively, a 5 V can be applied between VUSB and DGND from a bench supply. This application powers the isolating LMT8048 module, providing isolated power downstream. Alternatively, the downstream regulators can be back driven at VPRE/AGND (maximum of 20 V) or at V+/AGND (maximum of 16 V). AGND is the reference ground. Thus, this approach is not isolated.
INITIAL EVALUATION BOARD
CONFIGURATION
The ADR1001E-EBZ is preconfigured with no jumpers or other settings. Power the board using one of the methods described in the Power Supply Considerations section, and start monitoring the 5 V output at either the SMA output or the banana jacks, or both.
For optimal investigation, a 6-digit or higher meter, such as the HP3458 or Keithley 2001, or an equivalent, is required.
When the board is powered, both a green and a red LED illuminate.
When the chip reaches temperature, the red LED turns off.

USING THE EVALUATION BOARD FOR TESTING
The evaluation board is designed along the lines of a simple pocket calibrator, and thus alternative methods for supplying the device under test (DUT) were not thoroughly provided for. For example, the Heater− (HTR_GND) is directly grounded, and thus there is no means of providing a −15 V supply to Heater− for an overall 30 V heater supply.
The evaluation board is straightforward to use. Power the board using one of the methods discussed in the Power Supply Considerations section and start measuring the output DC voltage. When measuring the supply current, observe the initial fairly high current as the heater brings the ADR1001 to its set temperature (approximately 70°C). The ADR1001 has an internal current limit of about 100 mA. However, the on-board LT3045 devices are configured to limit available current to 75 mA. After losses and transformer, this limits the 5 V USB input current to about 250 mA.
The TSET pin is brought out to R14 and R15 resistors to allow for adjustment of the chip temperature. The INV1 and INV2 pins are brought out to TP7 and TP8 pins, allowing access to the on-chip matched resistor pair. However, no simple means of using them in circuit is provided, because the focus is on optimizing the 5 V reference and avoiding the introduction of more thermocouples.

EVALUATION BOARD SCHEMATIC AND ARTWORK

ORDERING INFORMATION

BILL OF MATERIALS
Table 1. Bill of Materials

Qty.| Reference Designator| Description| Value| Manufacturer| Part No.
---|---|---|---|---|---
1| | PCB| | Analog Devices, Inc.| 08_067406c
4| C1, C3, C4, C9| Capacitor, ceramic, 10 μF, 25 V, 10%, X5R, 0805| 10 μF| Murata| GRM21BR61E106KA73L
1| C10| Capacitor, ceramic, 12 pF, 50 V, 5%, C0G, 0603| 12 pF| AVX Corporation| 06035A120JAT2A
4| C2, C8, C11, C13| Capacitor, ceramic, 1 μF, 25 V, 10%, X5R, 0603| 1 μF| AVX Corporation| 06033D105KAT2A
2| C5, C12| Capacitor, ceramic, 0.012 μF, 50 V, 5%, X7R, 0603| 0.012 μF| AVX Corporation| 06035C123JAT2A
1| C6| Capacitor, ceramic, 1 μF, 50 V, 10%, X7R, 1206, AEC-Q200| 1 μF| Murata| GCJ31MR71H105KA12L
1| D1| LED, red, surface-mount device (SMD), monocolor, waterclear| 150060RS75000| Wurth Elektronik| 150060RS75000
1| D2| LED, SMD, green, 525 nm, 3.2 V, 0603| 150060GS75020| Wurth Elektronik| 150060GS75020
2| J1, J3| Connector, printed circuit board (PCB), banana jack| 575-4| Keystone Electronics| 575-4
1| J2| Connector, PCB, 16 position, USB 2.0, Type C, receptacle, right
angle, 0.85 mm pitch| USB4085-GF-A| GCT| USB4085-GF-A
1| R1| Resistor, SMD, 2 kΩ 1%, 1/10 W, 0603| 2K| Yageo| RC0603FR-072KL
1| R10| Resistor, SMD, 1 MΩ 1%, 1/10 W, 0402, AEC-Q200| 1 MΩ| Panasonic| ERJ- 2RKF1004X
1| R11| Resistor, SMD, 10 kΩ 1%, 1/10 W, 0603, AEC-Q200| 10 kΩ| Panasonic| ERJ-3EKF1002V
2| R9, R12| Resistor, SMD, 5.1 kΩ, 1%, 1/10 W, 0603| 5.1 kΩ| Bourns| CR0603 -FX-5101ELF
1| R2| Resistor, SMD, 59 kΩ, 1%, 1/10 W, 0402, AEC-Q200| 59 kΩ| Panasonic| ERJ-2RKF5902X
1| R3| Resistor, SMD, 110 kΩ, 1%, 1/10 W, 0603, AEC-Q200| 110 kΩ| Panasonic| ERJ-3EKF1103V
1| R6| Resistor, SMD, 2.94 kΩ, 0.1%, 1/10 W, 0603, AEC-Q200, high reliability| 2.94 kΩ| Panasonic| ERA-3AEB2941V
1| R7| Resistor, SMD, 10 kΩ, 5%, 1/10 W, 0603| 10 kΩ| Yageo| RC0603JR-0710KL
1| R8| Resistor, SMD, 120 Ω, 0.02%, 1/10 W, 0805| 120 Ω| Vishay Precision Group| Y1629120R000Q9R
3| TP1, TP3, TP5| Connector, PCB, test point, red| Red| Vero Technologies| 20-313137
3| TP2, TP4, TP6| Connector, PCB, test point, black| Black| Keystone Electronics| 5001
1| U1| IC-LIN 20 V, 500 mA, ultralow noise, ultrahigh power supply
rejection ratio (PSRR) linear regulator| LT3045EDD#PBF| Linear Technology| LT3045EDD#PBF
1| U2| IC-LIN isolated micromodule DC/DC converter with low dropout
(LDO) postregulator| LTM8048EY#PBF| Linear Technology| LTM8048EY#PBF
1| U4| IC, Analog Devices oven controlled, buried Zener, precision voltage
reference| ADR1001AEZ| Analog Devices| ADR1001AEZ
1| U5| IC, 1.2 A, overvoltage/overcurrent protector| LTC4362IDCB-2

TRMPBF| Linear Technology|

LTC4362IDCB-2#TRMPBF
1| VOUT1| Connector, PCB, SMT test points| 5015| Keystone Electronics| 5015
1| X2| Connector, PCB, jack assembly end launch SMA 62 mils thick
board| 142-0701-851| CINCH| 142-0701-851

Table 2. Mechanical Parts

Table 3. Do Not Install1

Qty.| Reference Designator| Description| Value| Manufacturer| Part No.
---|---|---|---|---|---
1| R13| Resistor, SMD, 1 Ω, 1%, 1/10 W, 0603, AEC-Q200| 1| Panasonic| ERJ- U03F1R00V
2| R14, R15| Resistor, SMD, 10 kΩ, 1%, 1/16 W, 0603| 10 kΩ| MULTICOMP (SPC)| MC0603WGF1002T5E-TC

1. These components are part of the PCB or are not to be installed.

ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.

Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc. (“ADI”), with its principal place of business at Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal, temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term “Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board. Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE AMOUNT OF ONE HUNDRED US DOLLARS ($100.00).  EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the International Sale of Goods shall not apply to this Agreement and is expressly disclaimed.

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Rev. 0 | 7 of 7

References

• ADR1001 Datasheet and Product Info | Analog Devices
• EVAL-ADR1001 Evaluation Board | Analog Devices
• LTC4362 Datasheet and Product Info | Analog Devices
• LTM8048 Datasheet and Product Info | Analog Devices

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