参数资料
型号: AD5737ACPZ
厂商: Analog Devices Inc
文件页数: 20/44页
文件大小: 0K
描述: IC DAC QUAD 12BIT CUR 64-LFCSP
标准包装: 1
设置时间: 15µs
位数: 12
数据接口: DSP,MICROWIRE?,QSPI?,串行,SPI?
转换器数目: 4
电压电源: 模拟和数字
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 64-VFQFN 裸露焊盘,CSP
供应商设备封装: 64-LFCSP-VQ(9x9)
包装: 托盘
输出数目和类型: 4 电流,单极
采样率(每秒): *
Data Sheet
AD5737
Rev. C | Page 27 of 44
Gain Register
The 12-bit gain register allows the user to adjust the gain of
each channel in steps of 1 LSB. To write to the gain register of
one DAC channel, set the DREG[2:0] bits to 010 (see Table 13).
To write the same gain code to all four DAC channels at the
same time, set the DREG[2:0] bits to 011. The gain register
coding is straight binary, as shown in Table 14. The default code
in the gain register is 0xFFFF. The maximum recommended
gain trim is approximately 50% of the programmed range to
maintain accuracy (for more information, see the Digital Offset
Offset Register
The 12-bit offset register allows the user to adjust the offset
of each channel by 2048 LSB to +2047 LSB in steps of 1 LSB.
To write to the offset register of one DAC channel, set the
DREG[2:0] bits to 100 (see Table 15). To write the same offset
code to all four DAC channels at the same time, set the DREG[2:0]
bits to 101. The offset register coding is straight binary, as shown in
Table 16. The default code in the offset register is 0x8000, which
results in zero offset programmed to the output (for more infor-
Clear Code Register
The 12-bit clear code register allows the user to set the clear
value of each channel. To configure a channel to be cleared
when the CLEAR pin is activated, set the CLR_EN bit in the
DAC control register for that channel (see Table 23). To write
to the clear code register, set the DREG[2:0] bits to 110 (see
Table 17). The default clear code is 0x0000 (for more informa-
tion, see the Asynchronous Clear section).
Table 13. Programming the Gain Register
R/W
DUT_AD1
DUT_AD0
DREG2
DREG1
DREG0
DAC_AD1
DAC_AD0
D15 to D4
D3 to D0
0
Device address
0
1
0
DAC channel address
Gain adjustment
1111
Table 14. Gain Register Bit Descriptions
Gain Adjustment
G15
G14
G13 to G5
G4
G3 to G0
+4096 LSB
1
111111111
1
1111
+4095 LSB
1
111111111
0
1111
1111
1 LSB
0
000000000
1
1111
0 LSB
0
000000000
0
1111
Table 15. Programming the Offset Register
R/W
DUT_AD1
DUT_AD0
DREG2
DREG1
DREG0
DAC_AD1
DAC_AD0
D15 to D4
D3 to D0
0
Device address
1
0
DAC channel address
Offset adjustment
0000
Table 16. Offset Register Bit Descriptions
Offset Adjustment
OF15
OF14
OF13
OF12 to OF5
OF4
OF3 to OF0
+2047 LSB
1
11111111
1
0000
+2046 LSB
1
11111111
0
0000
0000
No Adjustment (Default)
1
0
00000000
0
0000
0000
2047 LSB
0
00000000
1
0000
2048 LSB
0
00000000
0
0000
Table 17. Programming the Clear Code Register
R/W
DUT_AD1
DUT_AD0
DREG2
DREG1
DREG0
DAC_AD1
DAC_AD0
D15 to D4
D3 to D0
0
Device address
1
0
DAC channel address
Clear code
0000
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