参数资料
| 型号： | AD5344BRU |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT QUAD VOUT 28-TSSOP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 50 |
| 设置时间： | 8µs |
| 位数： | 12 |
| 数据接口： | 并联 |
| 转换器数目： | 4 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 4.5mW |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
| 输出数目和类型： | 4 电压，单极；4 电压，双极 |
| 采样率（每秒）： | 125k |
REV. 0
AD5334/AD5335/AD5336/AD5344
–16–
SUGGESTED DATABUS FORMATS
In many applications the GAIN input of the AD5334 and
AD5336 may be hard-wired. However, if more flexibility is
required, it can be included in a data bus. This enables the user
to software program GAIN, giving the option of doubling the
resolution in the lower half of the DAC range. In a bused system
GAIN may be treated as a data input since it is written to the
device during a write operation and takes effect when
LDAC is
taken low. This means that the output amplier gain of multiple
DAC devices can be controlled using a common GAIN line.
The AD5336 databus must be at least 10 bits wide and is best
suited to a 16-bit databus system.
Examples of data formats for putting GAIN on a 16-bit databus
are shown in Figure 32. Note that any unused bits above the
actual DAC data may be used for GAIN.
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DB8
DB9
GAIN
X
AD5336
X
X = UNUSED BIT
X
Figure 32. AD5336 Data Format for Byte Load with GAIN
Data on 8-Bit Bus
APPLICATIONS INFORMATION
Typical Application Circuits
The AD5334/AD5335/AD5336/AD5344 can be used with a
wide range of reference voltages and offer full, one-quadrant
multiplying capability over a reference range of 0.25 V to VDD.
More typically, these devices may be used with a xed, preci-
sion reference voltage. Figure 33 shows a typical setup for the
devices when using an external reference connected to the refer-
ence inputs. Suitable references for 5 V operation are the AD780
and REF192. For 2.5 V operation, a suitable external reference
would be the AD589, a 1.23 V bandgap reference.
AD5334/AD5335/
AD5336/AD5344
VOUT*
0.1 F
VDD = 2.5V TO 5.5V
VDD
GND
AD780/REF192
WITH VDD = 5V
OR
AD589 WITH VDD = 2.5V
VREF*
GND
VOUT
VIN
EXT
REF
*ONLY ONE CHANNEL OF VREF AND VOUT SHOWN
10 F
Figure 33. AD5334/AD5335/AD5336/AD5344 Using
External Reference
Driving VDD from the Reference Voltage
If an output range of zero to VDD is required, the simplest
solution is to connect the reference inputs to VDD. As this supply
may not be very accurate, and may be noisy, the devices
may be powered from the reference voltage, for example
using a 5 V reference such as the ADM663 or ADM666,
as shown in Figure 34.
AD5334/AD5335/
AD5336/AD5344
VOUT*
VDD
GND
VREF*
GND
VOUT(2)
VIN
ADM663/ADM666
VSET
SHDN
SENSE
6V TO 16V
*ONLY ONE CHANNEL OF VREF AND VOUT SHOWN
0.1 F
10 F
0.1 F
Figure 34. Using an ADM663/ADM666 as Power and
Reference to AD5334/AD5335/AD5336/AD5344
Bipolar Operation Using the AD5334/AD5335/AD5336/AD5344
The AD5334/AD5335/AD5336/AD5344 have been designed
for single supply operation, but bipolar operation is achievable
using the circuit shown in Figure 35. The circuit shown has been
congured to achieve an output voltage range of –5 V < VO <
+5 V. Rail-to-rail operation at the amplier output is achievable
using an AD820 or OP295 as the output amplier.
The output voltage for any input code can be calculated as
follows:
VO = [(1 + R4/R3)
× (R2/(R1 + R2) × (2 × VREF × D/2
N)] – R4 × V
REF/R3
where:
D is the decimal equivalent of the code loaded to the DAC, N is
DAC resolution and VREF is the reference voltage input.
With:
VREF = 2.5 V
R1 = R3 = 10 k
R2 = R4 = 20 k
and VDD = 5 V.
VOUT = (10
× D/2N) – 5
AD5334/AD5335/
AD5336/AD5344
GND
VDD = 5V
EXT
REF
VOUT*
AD780/REF192
WITH VDD = 5V
OR
AD589 WITH VDD = 2.5V
GND
VIN
VOUT
VREF*
VDD
R3
10k
R1
10k
R2
20k
R4
20k
5V
+5V
–5V
*ONLY ONE CHANNEL OF VREF AND VOUT SHOWN
0.1 F
10 F
Figure 35. Bipolar Operation using the AD5334/AD5335/
AD5336/AD5344
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| AD5344BRU-REEL | 制造商:Analog Devices 功能描述:DAC 4-CH Resistor-String 12-bit 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:DAC 4-CH RES-STRING 12-BIT 28TSSOP - Tape and Reel |
| AD5344BRU-REEL7 | 制造商:Analog Devices 功能描述:DAC 4-CH Resistor-String 12-bit 28-Pin TSSOP T/R 制造商:Analog Devices 功能描述:DAC 4-CH RES-STRING 12-BIT 28TSSOP - Tape and Reel |
| AD5344BRUZ | 功能描述:IC DAC 12BIT QUAD VOUT 28-TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 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）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-uMAX 包装:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
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| AD5344BRUZ-REEL7 | 功能描述:IC DAC 12BIT QUAD VOUT 28-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: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）:* |
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