ISL2108010EV1Z Renesas

USERS MANUAL ISL21080xxEV1Z AN1761 Rev 1.00 Evaluation Boards August 15, 2016 TABLE 1. ORDERING INFORMATION (Continued) Introduction BOARD NUMBER OUTPUT VOLTAGE (V) TYPE The ISL21080XXEV1Z evaluation board is designed to ISL2108033EV1Z 3.3 Evaluation Board measure the performance of the nano power ISL21080 ISL2108040EV1Z 4.096 Evaluation Board voltage reference. The reference comes in a wide selection of output voltages ranging from 0.9V to 5.0V, and an initial ISL2108050EV1Z 5.0 Evaluation Board accuracy as low as 0.2% (3.0V to 5.0V options). With a typical supply current of 500nA or less, the ISL21080 is ideal for ISL21080XXEV1Z Board extending battery life while reducing cost for general purpose The schematic of the evaluation board is shown in Figure 5. The portable applications. ISL21080XXEV1Z contains the ISL21080 voltage reference The evaluation board includes voltage input test points (V (U ), input decoupling capacitors (C , C ), and a load capacitor IN 1 1 2 and GND) for a power supply input, as well as a pair of test (C ). The power supply leads attach to TP1 and TP2 (V , GND). 3 IN points for the output (V and GND). Additionally, a The output is measured at test points TP3 and TP4 (V , GND). OUT OUT jumperable R-C damper network can connect to V (J ), and OUT 1 The R-C damper network is populated and can be connected to R accepts surface mount or through-hole style resistors for 2 the reference output by adding a shunt to the R-C jumper (J ). 1 output load testing. The damper network improves stability by reducing transient load ringing with high value (>0.47F) capacitors. Reference Documents TABLE 2. COMPONENT PARTS LIST ISL21080 Datasheet DEVICE VALUE DESCRIPTION TABLE 1. ORDERING INFORMATION C 10F Bypass Capacitor 1 BOARD NUMBER OUTPUT VOLTAGE (V) TYPE C 0.01F Bypass Capacitor 2 ISL2108009EV1Z 0.9 Evaluation Board C 0.01F Load Capacitor ISL2108010EV1Z 1.024 Evaluation Board 3 ISL2108012EV1Z 1.25 Evaluation Board C 10F Damper Capacitor 4 ISL2108015EV1Z 1.5 Evaluation Board J 2-Pin Header Damper Jumper 1 ISL2108020EV1Z 2.048 Evaluation Board R 2.21k Damper Resistor 1 ISL2108025EV1Z 2.5 Evaluation Board R DNP Optional Load Resistor 2 ISL2108030EV1Z 3.0 Evaluation Board TP - TP Test Point Input and Output Test Points 1 4 U ISL21080 SOT-23 3-Pin Package 1 FIGURE 1. VOLTAGE REFERENCE EVALUATION BOARD (ISL2108025EV1Z) AN1761 Rev 1.00 Page 1 of 4 August 15, 2016ISL21080xxEV1Z Voltage Reference Evaluation Board Layout FIGURE 2. TOP COMPONENTS FIGURE 3. BOTTOM LAYER FIGURE 4. ASSEMBLY DRAWING AN1761 Rev 1.00 Page 2 of 4 August 15, 2016