AD587 10 V Low-Noise Reference Feeding a Light Load

About this circuit

# AD587 10 V Low-Noise Reference Feeding a Light Load ## Application This circuit uses AD587 Voltage Reference as a 10 V low-noise reference feeding a light precision-load node. It is a starter operating-point demo for ADC references, DAC references, and calibration rails that need a stable 10 V source. ## Design Context VIN is set to 15 V and feeds U1 from the left. VOUT drives RLOAD on the right, the GND pin returns to the bottom bus, and the TRIM and NR support pins are parked on the same return bus so the main reference-output behavior remains clear. ## Expected Behavior Vout should settle near 10 V. With RLOAD at 10K, the output supplies about 1.0 mA, and the Vin/Vout probes show the input headroom and regulated reference node in the operating-point table. ## Key Values - VIN: 15 V DC input supply. - RLOAD: 10K reference load. - TRIM and NR: parked on the return bus for this operating-point demo. - Expected output: about 10 V at Vout. ## Suggested Experiments - Change RLOAD to 4.7K or 100K and compare Vout under different load currents. - Lower VIN toward the reference voltage to inspect input headroom behavior. - Replace the parked TRIM or NR connections with an application-specific trim or noise-reduction network. ## Featured Component AD587 Voltage Reference is the low-noise 10 V reference under test. The demo highlights its VIN, GND, VOUT, TRIM, and NR terminals while keeping the reference-load path easy to read.