ADPD2210

Data Sheet FEATURES Ultralow noise, low power current amplifier 80 fA/√Hz (typical) noise floor 140 μA (typical) of supply current when active (EE = 0 μW/cm2) 100 nA (typical) of supply current in standby Flexible output configuration Optimized for pulsed systems Nominal linear output: 240 μA Space-saving 2 mm × 2 mm LFCSP package APPLICATIONS Photoplethysmography Photodiode measurements Small current pulsed amperometry Any application requiring the ultralow noise amplification of small currents Ultralow Noise, Low Power Current Amplifier ADPD2210 FUNCTIONAL BLOCK DIAGRAM REF VCC BIAS VCC – (2 × VBE) POWER-DOWN LOGIC PWDN 10nA OUT IN 24 × CURRENT MIRROR GND 12286-101 Figure 1. GENERAL DESCRIPTION The ADPD2210 is a low noise current amplifier designed to allow the use of smaller photodiodes by amplifying sensor signal currents by a factor of 24 while adding minimal noise. This amplification provides the system sensitivity of a large photodiode with the benefits of ...