参数资料
型号: DAC5688IRGCTG4
厂商: TEXAS INSTRUMENTS INC
元件分类: DAC
英文描述: PARALLEL, WORD INPUT LOADING, 0.0104 us SETTLING TIME, 16-BIT DAC, PQCC64
封装: 9 X 9 MM, GREEN, PLASTIC, VQFN-64
文件页数: 16/56页
文件大小: 1321K
代理商: DAC5688IRGCTG4
V
EXTIO
Rbias
(DACA_gain ) 1)
vco +
(M)
(N)
ref
www.ti.com
SLLS880C – DECEMBER 2007 – REVISED AUGUST 2010
Register name: CONFIG27 Address: 0x1B, Default 0xFF
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
coarse_daca(3:0)
coarse_dacb(3:0)
1
coarse_daca(3:0)
:
Scales the output current is 16 equal steps.
coarse_dacb(3:0)
:
Same as above except for DACB.
Register name: CONFIG28 Address: 0x1C, Default 0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Reserved
0
Register name: CONFIG29 Address: 0x1D, Default 0x00
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
PLL_m(4:0)
PLL_n(2:0)
0
PLL_m
:
M portion of the M/N divider of the PLL thermometer encoded:
PLL_m(4:0)
M value
00000
1
00001
2
00011
4
00111
8
01111
16
11111
32
All other values
Invalid
PLL_n
:
N portion of the M/N divider of the PLL thermometer encoded. If supplying a high rate CLK2/C frequency, the PLL_n value
should be used to divide down the input CLK2/C to maintain a maximum PFD operating of 160 MHz.
PLL_n(2:0)
n value
000
1
001
2
011
4
111
8
All other values
Invalid
PLL Function:
where ref is the frequency of the external DAC clock input on the CLK2/C pins
Copyright 2007–2010, Texas Instruments Incorporated
23
Product Folder Link(s): DAC5688
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