Title:
【発明の名称】改良された電流ステアD/A変換
Document Type and Number:
Japanese Patent JP2003526985
Kind Code:
A
Abstract:
The present invention refers to a method for using a current-steering N-bit D/A converter and to the D/A converter, said converter comprising N binary weighted current sources SIk, k=0, 1, . . . , N-1, connectable to a common output, each current source SIk comprising 2k unit current sources, SIunit, of equal strength connected in parallel, wherein digital input bits bi, i=0, 1, . . . , N-1, bN-1 being the most significant bit (MSB), determine which respective current source, SIk, k=0, 1, . . . , N-1, to be connected to the output. The invention features that, during D/A conversion, the current IN-1, from the largest current source SIN-1 is substituted for a current ĨN-1, wherein which expression, Ik being the current from the current source SIk, Iunit being the current from an additional unit current source.
Inventors:
Anderson, Ola
Application Number:
JP2001566275A
Publication Date:
September 09, 2003
Filing Date:
February 28, 2001
Export Citation:
Assignee:
Telefon Acty Boraget Elm Ericsson
International Classes:
H03M1/10; H03M1/80; H03M1/74; (IPC1-7): H03M1/80; H03M1/10
Attorney, Agent or Firm:
Akira Asamura (3 outside)