US 7,321,260 B2
Ping-pong auto-zero amplifier with glitch reduction
Mark R. Larson, Maple Grove, Minn. (US)
Assigned to Honeywell International, Inc., Morristown, N.J. (US)
Filed on Mar. 07, 2006, as Appl. No. 11/369,384.
Prior Publication US 2007/0222505 A1, Sep. 27, 2007
Int. Cl. H03F 1/02 (2006.01)
U.S. Cl. 330—9  [330/51] 20 Claims
OG exemplary drawing
 
1. A ping-pong auto-zero amplifier, comprising:
a first nulling amplifier having first and second differential inputs and a single-ended output, the first input coupled to receive a pre-output signal of the ping-pong amplifier; and
a switching network for auto-zeroing a ping amplifier within the ping-pong amplifier, the switching network providing during the auto-zeroing:
i) a coupling of the output of the nulling amplifier to a first auxiliary differential input of the ping amplifier; and
ii) a coupling of the second input of the first nulling amplifier to a single-ended output of the ping amplifier.