参数资料
| 型号： | AD5323ARUZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/28页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT DUAL R-R 16-TSSOP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 96 |
| 设置时间： | 8µs |
| 位数： | 12 |
| 数据接口： | 串行 |
| 转换器数目： | 2 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 2.5mW |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 管件 |
| 输出数目和类型： | 2 电压，单极；2 电压，双极 |
| 采样率（每秒）： | 125k |
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AD5303/AD5313/AD5323
Rev. B | Page 23 of 28
COARSE AND FINE ADJUSTMENT USING THE
AD5303/AD5313/AD5323
The DACs in the AD5303/AD5313/AD5323 can be paired
together to form a coarse and fine adjustment function, as
shown in Figure 45. DAC A provides the coarse adjustment
while DAC B provides the fine adjustment. Varying the ratio
of R1 and R2 changes the relative effect of the coarse and fine
adjustments. With the resistor values and external reference
shown, the output amplifier has unity gain for the DAC A
output, so the output range is 0 V to 2.5 V 1 LSB. For
DAC B, the amplifier has a gain of 7.6 × 10–3, giving DAC B
a range equal to 19 mV.
The circuit is shown with a 2.5 V reference, but reference
voltages up to VDD may be used. The op amps indicated allow
a rail-to-rail output swing.
GND
AD5303/AD5313/
AD5323
EXT 2.5V
REF
00
47
2-
0
45
VOUT
VOUTB
VREFA
1F
GND
VIN
0.1F
10F
VDD
VDD = 5V
+5V
AD820/
OP295
VOUTA
VREFB
R2
51.2k
R1
390
VOUT
R4
900
R3
51.2k
AD780/REF192
WITH VDD = 5V
Figure 45. Coarse and Fine Adjustment
DAISY-CHAIN MODE
This mode is used for updating serially connected or standalone
devices on the rising edge of SYNC. For systems that contain
several DACs, or where the user wishes to read back the DAC
contents for diagnostic purposes, the SDO pin may be used to
daisy-chain several devices together and provide serial readback.
By connecting the daisy-chain enable (DCEN) pin high, the
daisy-chain mode is enabled. It is tied low in standalone mode.
In daisy-chain mode, the internal gating on SCLK is disabled.
The SCLK is continuously applied to the input shift register
when SYNC is low. If more than 16 clock pulses are applied,
the data ripples out of the shift register and appears on the SDO
line. This data is clocked out after the falling edge of SCLK and
is valid on the subsequent rising and falling edges. By connect-
ing this line to the DIN input on the next DAC in the chain, a
multiDAC interface is constructed. Sixteen clock pulses are
required for each DAC in the system. Therefore, the total
number of clock cycles must equal 16N, where N is the total
number of devices in the chain. When the serial transfer to all
devices is complete, SYNC should be taken high. This prevents
any further data from being clocked into the input shift register.
A continuous SCLK source may be used if it can be arranged
that SYNC is held low for the correct number of clock cycles.
Alternatively, a burst clock containing the exact number of
clock cycles may be used and SYNC may be taken high some
time later.
When the transfer to all input registers is complete, a common
LDAC signal updates all DAC registers and all analog outputs
are updated simultaneously.
00
47
2-
0
46
68HC111
MISO
MOSI
SCK
PC7
PC6
DIN
SCLK
AD5303/
AD5313/
AD53231
(DAC 1)
SYNC
LDAC
SDO
SCLK
AD5303/
AD5313/
AD53231
(DAC 2)
SYNC
LDAC
SDO
DIN
SCLK
AD5303/
AD5313/
AD53231
(DAC N)
SYNC
LDAC
SDO
DIN
1ADDITIONAL PINS OMITTED FOR CLARITY.
Figure 46. Daisy-Chain Mode
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5323ARUZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.5 V to 5.5 V, 230 ??A, Dual Rail-to-Rail Voltage Output 8-/10-/12-Bit DACs |
| AD5323ARUZ-REEL7 | 功能描述:IC DAC 12BIT DUAL R-R 16-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| AD5323ARUZ-REEL71 | 制造商:AD 制造商全称:Analog Devices 功能描述:2.5 V to 5.5 V, 230 ??A, Dual Rail-to-Rail Voltage Output 8-/10-/12-Bit DACs |
| AD5323BRU | 功能描述:IC DAC 12 BIT DUAL R-R 16-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:47 系列:- 设置时间:2µs 位数:14 数据接口:并联 转换器数目:1 电压电源:单电源 功率耗散（最大）:55µW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SSOP（0.209"，5.30mm 宽） 供应商设备封装:28-SSOP 包装:管件 输出数目和类型:1 电流，单极；1 电流，双极 采样率（每秒）:* |
| AD5323BRU-REEL | 制造商:Analog Devices 功能描述:DAC 2-CH Resistor-String 12-bit 16-Pin TSSOP T/R 制造商:Analog Devices 功能描述:DAC 2CH RES-STRING 12-BIT 16TSSOP - Tape and Reel |
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