BU2506FV_09 Datasheet, PDF (5/9 Pages) Rohm – High-precision 10bit 8ch 10ch Type D/A Converters

BU2506FV,BU2505FV
Technical Note
●Command Transmission
1) Reverse = open (or VCC short-circuit) setting
(Data: LSB first)
(1) Data format
Last
First
MSB
LSB
Ｄ13 Ｄ12 Ｄ11 Ｄ10 Ｄ9 Ｄ8 Ｄ7 Ｄ6 Ｄ5 Ｄ4 Ｄ3 Ｄ2 Ｄ1 Ｄ0
For DＤ/／A Ａcoｺnﾝvﾊeﾞｰrtﾀe出r o力ut設pu定t s用etting
For a_ｱd_ﾄd_ﾞﾚre_ｽss_選s_択ele_用ction
(2) Data timing diagram
LSB
DI
D0 D1 D2 D3
CLK
LD
DA OUTPUT
MSB
D11 D12 D13
D3 D2 D1 D0 Address Selection
0
0
0
0
Inconsequential
0
0
0
1
AO1 selection
0
0
1
0
AO2 selection
0
0
1
1
AO3 selection
0
1
0
0
AO4 selection
0
1
0
1
AO5 selection
0
1
1
0
AO6 selection
0
1
1
1
AO7 selection
1
0
0
0
AO8 selection
1
0
0
1
AO9 selection^*1
1
0
1
0
AO10 selection^*1
1
0
1
1
Inconsequential
1
1
0
0
Inconsequential
1
1
0
1
Inconsequential
1
1
1
0
Inconsequential
1
1
1
1
Inconsequential
D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D/A output (VrefH=VDD, VrefL=VSS)
0
0
0
0
0
0
0
0
0
0
VrefL
0
0
0
0
0
0
0
0
0
1 (VrefH-VrefL)/1024×1+VrefL
0
0
0
0
0
0
0
0
1
0 (VrefH-VrefL)/1024×2+VrefL
0
0
0
0
0
0
0
0
1
1 (VrefH-VrefL)/1024×3+VrefL
:
:
:
:
:
:
:
:
:
:
:
1
1
1
1
1
1
1
1
1
0 (VrefH-VrefL)/1024×1022+VrefL
1
1
1
1
1
1
1
1
1
1 (VrefH-VrefL)/1024×1023+VrefL
2) Reverse = L setting(Data: MSB first )
(1) Data format
D3 D2 D1 D0 Address selection
Last
MSB
First
LSB
0
0
0
0
Inconsequential
Ｄ4 Ｄ5 Ｄ6 Ｄ7 Ｄ8 Ｄ9 Ｄ10 Ｄ11 Ｄ12 Ｄ13 Ｄ3 Ｄ2 Ｄ1 Ｄ0
For D_Ｄ/_／A c_Ａo_ｺn_ﾝv_ﾊe_ﾞr_ｰte_ﾀr_出o_力utp_設u_定t s_用etting
For _ｱad_ﾄd_ﾞﾚre_ｽs_選s s_択ele_用ction
0
0
0
1
0
0
1
0
AO1 selection
AO2 selection
(2) Data timing diagram
0
0
1
1
0
1
0
0
AO3 selection
AO4 selection
LSB
DI
D0 D1 D2 D3
MSB
D11 D12 D13
0
1
0
1
0
1
1
0
AO5 selection
AO6 selection
CLK
LD
DA OUTPUT
0
1
1
1
AO7 selection
1
0
0
0
AO8 selection
1
0
0
1
AO9 selection^*1
1
0
1
0
AO10 selection^*1
1
0
1
1
Inconsequential
1
1
0
0
Inconsequential
1
1
0
1
Inconsequential
1
1
1
0
Inconsequential
1
1
1
1
Inconsequential
D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D/A output (VrefH=VDD, VrefL=VSS)
0
0
0
0
0
0
0
0
0
0
VrefL
1
0
0
0
0
0
0
0
0
0 (VrefH-VrefL)/1024×1+VrefL
0
1
0
0
0
0
0
0
0
0 (VrefH-VrefL)/1024×2+VrefL
1
1
0
0
0
0
0
0
0
0 (VrefH-VrefL)/1024×3+VrefL
:
:
:
:
:
:
:
:
:
:
:
0
1
1
1
1
1
1
1
1
1 (VrefH-VrefL)/1024×1022+VrefL
1
1
1
1
1
1
1
1
1
1 (VrefH-VrefL)/1024×1023+VrefL
*1 In the BU2506FV, this channel is for testing, therefore, do not designate.
www.rohm.com
© 2009 RzOHM Co., Ltd. All rights reserved.
5/8
2009.06 - Rev.A