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| 型号： | AD5763CSUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/28页 |
| 文件大小： | 0K |
| 描述： | DAC 16BIT DUAL 5V 2LSB 32-TQFP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | AD5763/65 Metal Layer Edit Change 08/Sept/2009 |
| 设计资源： | High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using AD5763 (CN0074) |
| 标准包装： | 500 |
| 设置时间： | 8µs |
| 位数： | 16 |
| 数据接口： | 串行 |
| 转换器数目： | 2 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 45mW |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-TQFP |
| 供应商设备封装： | 32-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电压，双极 |
| 采样率（每秒）： | * |
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AD5763
Data Sheet
Rev. C | Page 22 of 28
DESIGN FEATURES
ANALOG OUTPUT CONTROL
In many industrial process control applications, it is vital that
the output voltage be controlled during power-up and during
brownout conditions. When the supply voltages change, the
output pins are clamped to 0 V via a low impedance path. To
prevent the output amp being shorted to 0 V during this time,
Transmission Gate G1 is also opened (see Figure 28). These
conditions are maintained until the power supplies stabilize
and a valid word is written to the DAC register. At this time,
G2 opens and G1 closes. Both transmission gates are also exter-
nally controllable via the reset logic (RSTIN) control input. For
instance, if RSTIN is driven from a battery supervisor chip, the
RSTIN input is driven low to open G1 and close G2 on power-
down or during a brownout. Conversely, the on-chip voltage
detector output (RSTOUT) is also available to the user to
control other parts of the system. The basic transmission
gate functionality is shown in
G1
G2
RSTOUT
RSTIN
VOUTA
AGNDA
VOLTAGE
MONITOR
AND
CONTROL
07
25
0-
03
4
Figure 28. Analog Output Control Circuitry
DIGITAL OFFSET AND GAIN CONTROL
The AD5763 incorporates a digital offset adjust function with
a ±16 LSB adjust range and 0.125 LSB resolution. The gain
register allows the user to adjust the AD5763 full-scale output
range. The full-scale output can be programmed to achieve full-
scale ranges of ±4.096 V, ±4.201 V, or ±4.311 V. A fine gain trim
is also provided.
PROGRAMMABLE SHORT-CIRCUIT PROTECTION
The short-circuit current, ISC, of the output amplifiers can be
programmed by inserting an external resistor between the
ISCC pin and PGND. The programmable range for the current
is 500 μA to 10 mA, corresponding to a resistor range of 120 kΩ
to 6 kΩ. The resistor value is calculated by
SC
I
R
60
≈
If the ISCC pin is left unconnected, the short-circuit current
limit defaults to 5 mA. It should be noted that limiting the short
circuit current to a small value can affect the slew rate of the
output when driving into a capacitive load, therefore, the value
of short-circuit current programmed should take into account
the size of the capacitive load being driven.
DIGITAL I/O PORT
The AD5763 contains a 2-bit digital I/O port (D1 and D0).
These pins can be configured as inputs or outputs independently,
and can be driven or have their values read back via the serial
interface. The I/O port signals are referenced to DVCC and DGND.
When configured as outputs, they can be used as control signals
to multiplexers or can be used to control calibration circuitry
elsewhere in the system. When configured as inputs, the logic
signals from limit switches can be applied to D0 and D1 and
can be read back via the digital interface.
DIE TEMPERATURE SENSOR
The on-chip die temperature sensor provides a voltage output
that is linearly proportional to the centigrade temperature scale.
Its nominal output voltage is 1.44 V at a 25°C die temperature,
varying at 3 mV/°C and giving a typical output range of 1.175 V
to 1.9 V over the full temperature range. Its low output imped-
ance and linear output simplify interfacing to temperature control
circuitry and ADCs. The temperature sensor is provided as
more of a convenience rather than a precise feature; it is intended
for indicating a die temperature change for recalibration
purposes.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5763CSUZ-TR | 制造商:Analog Devices 功能描述:16BIT +/-5V DUAL 1LSB - Tape and Reel |
| AD5764 | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete, Quad, 14/16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
| AD5764ASU | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete, Quad, 14/16-Bit, High Accuracy, Serial Input, Bipolar Voltage Output DAC |
| AD5764ASUZ | 功能描述:IC DAC 16BIT QUAD VOUT 32-TQFP 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) |
| AD5764ASUZ-REEL7 | 功能描述:IC DAC 16BIT QUAD VOUT 32-TQFP 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:Data Converter Fundamentals DAC Architectures 标准包装:750 系列:- 设置时间:7µs 位数:16 数据接口:并联 转换器数目:1 电压电源:双 ± 功率耗散（最大）:100mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:28-LCC（J 形引线） 供应商设备封装:28-PLCC（11.51x11.51） 包装:带卷 (TR) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:143k |
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