参数资料
型号: AD9735BBCZ
厂商: Analog Devices Inc
文件页数: 26/72页
文件大小: 0K
描述: IC DAC 12BIT 1.2GSPS 160-CSPBGA
产品培训模块: Data Converter Fundamentals
DAC Architectures
标准包装: 1
位数: 12
数据接口: 并联
转换器数目: 1
电压电源: 模拟和数字
功率耗散(最大): 550mW
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 160-LFBGA,CSPBGA
供应商设备封装: 160-CSPBGA(12x12)
包装: 托盘
输出数目和类型: 2 电流,单极
采样率(每秒): 1.2G
AD9734/AD9735/AD9736
Rev. A | Page 32 of 72
SYNC CONTROLLER (SYNC_CNT) REGISTERS (REG. 7, REG. 8)
ADDR
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x07
SYNC_CNT1
FIFOSTAT3
FIFOSTAT2
FIFOSTAT1
FIFOSTAT0
VALID
SCHANGE
PHOF<1>
PHOF<0>
0x08
SYNC_CNT2
SSURV
SAUTO
SFLT<3>
SFLT<2>
SFLT<1>
SFLT<0>
RESERVED
STRH<0>
Table 14. Sync Controller Register Bit Descriptions
Bit Name
Read/Write
Description
FIFOSTAT<2:0>
READ
Position of FIFO read counter ranges from 0 to 7.
FIFOSTAT<3>
READ
0, SYNC logic OK.
1, error in SYNC logic.
VALID
READ
0, FIFOSTAT<3:0> is not valid yet.
1, FIFOSTAT<3:0> is valid after a reset.
SCHANGE
READ
0, no change in FIFOSTAT<3:0>.
1, FIFOSTAT<3:0> has changed since the previous measurement cycle when SSURV = 1 (surveillance mode
active).
PHOF<1:0>
WRITE
00, change the readout counter.
READ
Current setting of the readout counter (PHOF<1:0>) in surveillance mode (SSURV = 1) after an interrupt.
Current calculated optimal readout counter value in AUTO mode (SAUTO = 1).
SSURV
WRITE
0, the controller stops after completion of the current measurement cycle.
1, continuous measurements are taken and an interrupt is issued if the readout counter drifts beyond the
threshold value.
SAUTO
WRITE
0, readout counter (PHOF<3:0>) is not automatically updated.
1, continuously starts measurement cycles and updates the readout counter according to the
measurement.
NOTE: SSURV (Reg. 8, Bit 7) must be set to 1 and the SYNC IRQ (Reg. 1, Bit 2) must be set to 0 for AUTO
mode.
SFLT<3:0>
WRITE
0x0, average filter length, FIFOSTAT = FIFOSTAT + Delta FIFOSTAT/2 ^ SFLT<3:0>; values greater than 12
(0x0C) are clipped to 12.
STRH<0>
WRITE
0, if FIFOSTAT<2:0> = 0 or 7, a sync interrupt is generated.
1, if FIFOSTAT<2:0> = 0, 1, 6 or 7, a sync interrupt is generated.
CROSS CONTROLLER (CROS_CNT) REGISTERS (REG. 10, REG. 11)
ADDR
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0x0A
CROS_CNT1
UPDEL<5>
UPDEL<4>
UPDEL<3>
UPDEL<2>
UPDEL<1>
UPDEL<0>
0x0B
CROS_CNT2
DNDEL<5>
DNDEL<4>
DNDEL<3>
DNDEL<2>
DNDEL<1>
DNDEL<0>
Table 15. Cross Controller Register Description
Bit Name
Read/Write
Description
UPDEL<5:0>
WRITE
0x00, move the differential output stage switching point up, set to 0 if DNDEL is non-zero.
DNDEL<5:0>
WRITE
0x00, move the differential output stage switching point down, set to 0 if UPDEL is non-zero.
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