Invention Grant
- Patent Title: D/A converter, circuit device, oscillator, electronic apparatus and moving object
-
Application No.: US15368935Application Date: 2016-12-05
-
Publication No.: US10256824B2Publication Date: 2019-04-09
- Inventor: Shigenori Isozaki
- Applicant: Seiko Epson Corporation
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2015-242798 20151214
- Main IPC: H03B5/32
- IPC: H03B5/32 ; H03L1/02 ; H03M1/76 ; H03M1/46 ; H03M1/66 ; H03M7/30 ; H03M1/68 ; H02M3/158

Abstract:
A D/A converter includes a decoder, a voltage selection circuit, and a voltage selection circuit. The voltage selection circuit includes a plurality of stages of selector blocks in which output of a selector of the selector block at the previous stage is input to a selector of the selector block at the subsequent stage. A plurality of voltages are input to the selector block at the first stage, and the selector block at the final stage outputs a D/A-converted voltage. Each of the plurality of stages of selector blocks includes a plurality of transistors and, of the plurality of transistors forming the selector block, a second transistor on a far side from a power source node is set to a lower threshold voltage than that of a first transistor on a near side from the power source node.
Public/Granted literature
- US20170170832A1 D/A CONVERTER, CIRCUIT DEVICE, OSCILLATOR, ELECTRONIC APPARATUS AND MOVING OBJECT Public/Granted day:2017-06-15
Information query