Evaluates: MAX1493/MAX1495 19-3107 Rev 0 12/07 MAX1493 Evaluation Kit General Description Features The MAX1493 is a low-power, 4.5-digit analog-to-digital Reference Design converter (ADC) with integrated liquid-crystal display (LCD) drivers. Proven PCB Layout The MAX1493 evaluation kit (EV kit) provides a proven printed-circuit board (PCB) layout to facilitate evalua- Complete Evaluation System tion of the MAX1493 IC. Connect the 4V to 28V DC and Convenient On-Board Test Points ground return to terminal block TB1 (see Figure 1). The EV kit is not a complete digital voltmeter (DVM) Fully Assembled and Tested additional input scaling and protection circuitry might be required. This EV kit can also evaluate the MAX1495CCJ+. Ordering Information Contact the factory for free samples. See the Evaluating the MAX1495 section for additional information. PART TYPE MAX1493EVKIT+ EV Kit +Denotes lead-free and RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION DESIGNATION QTY DESCRIPTION 10F 20%, 10V X5R ceramic LCD1 (2 rows) 2 15-pin socket headers C1, C2 2 capacitors (1210) R1 1 133k 1% resistor (1206) TDK C3225X7R1C106M R2 1 100k 1% resistor (1206) 0.47F 10%, 16V X7R ceramic TB1 1 0.200in, 2- ci r cui t scr ew term i nal b l ock C3C6 4 capacitors (0805) TP1TP4 4 8-pin headers TDK C2012X7R1C474K Maxim 4.5-digit ADC 0.1F 10%, 16V X7R ceramic U1 1 MAX1493CCJ+ (32-pin TQFP, 7mm x C7, C8, C9 3 capacitors (0603) 7mm) TDK C1608X7R1C104K Maxim LDO linear regulator Ferrite bead (0805) FB1 1 U2 1 MAX1615EUK+ (5-pin SOT23) Murata BLM21AH102SN1 (Top Mark: ABZD) JU1JU4, JU7, Maxim voltage reference JU8, JU10, 8 3-pin headers U5 1 MAX6062AEUR+ (3-pin SOT23) JU11 (Top Mark: FZFY) JU5, JU6, JU9 3 2-pin headers 12 Shunts Triplexed LCD, MAX1494 type LCD1 1 1 PCB: MAX1493 Evaluation Kit+ DCI Inc. 04-0925-00 Component Suppliers SUPPLIER PHONE WEBSITE Murata Mfg. Co., Ltd. 770-436-1300 www.murata.com TDK Corp. 847-803-6100 www.component.tdk.com Note: Indicate that you are using the MAX1493 or MAX1495 when contacting these component suppliers. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.MAX1493 Evaluation Kit ed liquid-crystal display (LCD) drivers. The optional Quick Start MAX6062 (U5) provides an improved-accuracy external Required Equipment reference voltage of 2.048V. See Figure 1 and refer to Before beginning, the following equipment is needed: the MAX1491MAX1495 IC data sheet. MAX1493 EV kit The EV kit includes a MAX1615 3V/5V linear regula- tor (U2). DC power supply, 4V to 28V DC 1mA The EV kit is not a complete digital voltmeter (DVM) Procedure additional input scaling and protection circuitry might The MAX1493 EV kit is fully assembled and tested. be required. Follow the steps below to verify board operation. Caution: Do not turn on the power until all connec- Evaluating the MAX1495 tions are made. The MAX1495 is similar to the MAX1493, but with the ability to enable offset calibration on demand. Refer to 1) Ensure that all jumpers are set to their factory- the MAX1491MAX1495 IC data sheet. Request a free default position (see Table 1 for jumper settings). sample of MAX1495CCJ+ and follow the steps below to 2) Turn on the power supply. verify board operation. Caution: Do not turn on the 3) Apply an input signal in the range of -2V to +2V power until all connections are made. between AIN+ and AIN-. Observe the readout on 1) With power disconnected, replace U1 with the the LCD display. MAX1495. 4) To configure the display for the +0.2V to -0.2V input 2) Ensure that jumper JU1 selects 3V or 5V logic level, range, move jumper JU3 to pins 2-3 and move as desired. jumper JU8 to pins 1-2. 3) Connect the DC power supply at terminal block TB1. Detailed Description of Hardware 4) Turn on the power supply. The LCD display should The MAX1493 device under test (U1) is a low-power, begin indicating measurement data. 4.5-digit analog-to-digital converter (ADC) with integrat- 2 Evaluates: MAX1493/MAX1495