We present a recording front-end for closed-loop neuromodulation with rail-to-rail offset correction. To mitigate High voltage stimulation artifact, the front-end uses an IΣ∆ ADC topology with memoryless, charge-based sampling. The front-end uses auto-zeroing to cancel differential and common-mode DC offsets originating from neural electrodes. We introduce a coordinated timing (CO-T) scheme that dynamically resets the front-end during narrow stimulation pulses. CO-T minimizes samples lost due to stimulation artifacts and enables high-fidelity signal reconstruction. We implemented the circuit in a 180nm CMOS process. To the best of our knowledge, this is the first spike-rate recording system with instant stimulation artifact recovery.