- 您现在的位置：买卖IC网 > PDF目录8560 > AD5764RCSUZ-REEL7 (Analog Devices Inc)IC DAC QUAD 16BIT VOUT 32-TQFP PDF资料下载
参数资料
| 型号： | AD5764RCSUZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/32页 |
| 文件大小： | 0K |
| 描述： | IC DAC QUAD 16BIT VOUT 32-TQFP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | AD5764(R), AD5744R Product Change 04/Sept/2009 |
| 设计资源： | High Accuracy, Bipolar Voltage Output Digital-to-Analog Conversion Using AD5764 (CN0006) |
| 标准包装： | 500 |
| 设置时间： | 8µs |
| 位数： | 16 |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 4 |
| 电压电源： | 双 ± |
| 功率耗散（最大）： | 275 mW |
| 工作温度： | -40°C ~ 85°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： | 4 电压，双极 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页当前第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
Data Sheet
AD5764R
Rev. D | Page 27 of 32
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 are changing,
the VOUTx pins are clamped to 0 V via a low impedance path.
To prevent the output amp from being shorted to 0 V during
this time, Transmission Gate G1 is also opened (see Figure 42).
G1
G2
RSTOUT
RSTIN
VOUTA
AGNDA
VOLTAGE
MONITOR
AND
CONTROL
06064-
063
Figure 42. Analog Output Control Circuitry
These conditions are maintained until the power supplies stabilize
and a valid word is written to the data register. G2 then opens, and
G1 closes. Both transmission gates are also externally controllable
by using the reset in (RSTIN) control input. For example, if RSTIN
is driven from a battery supervisor chip, the RSTIN input is driven
low to open G1 and close G2 on power-off 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 Figure 42.
DIGITAL OFFSET AND GAIN CONTROL
The AD5764R 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 AD5764R full-scale output range.
The full-scale output can be programmed to achieve full-scale
ranges of ±10 V, ±10.25 V, and ±10.5 V. A fine gain trim is also
available.
PROGRAMMABLE SHORT-CIRCUIT PROTECTION
The short-circuit current (ISC) of the output amplifiers can be pro-
grammed by inserting an external resistor between the ISCC
pin and the PGND pin. The programmable range for the current
is 500 A to 10 mA, corresponding to a resistor range of 120 k
to 6 k. The resistor value is calculated as follows:
R ≈
SC
I
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 the short-circuit current that is programmed should
take into account the size of the capacitive load being driven.
DIGITAL I/O PORT
The AD5764R contains a 2-bit digital I/O port (D1 and D0). These
bits can be configured independently as inputs or outputs 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, for example, can be applied to D0
and D1 and can be read back using the digital interface.
DIE TEMPERATURE SENSOR
The on-chip die temperature sensor provides a voltage output
that is linearly proportional to the Celsius temperature scale.
Its nominal output voltage is 1.47 V at +25°C die temperature,
varying at 5 mV/°C, giving a typical output range of 1.175 V to
1.9 V over the full temperature range. Its low output impedance,
and linear output simplify interfacing to temperature control
circuitry and analog-to-digital converters (ADCs). The temper-
ature sensor is provided as more of a convenience than as a precise
feature; it is intended for indicating a die temperature change for
recalibration purposes.
LOCAL GROUND OFFSET ADJUST
The AD5764R incorporates a local ground offset adjust feature
that, when enabled in the function register, adjusts the DAC
outputs for voltage differences between the individual DAC ground
pins and the REFGND pin, ensuring that the DAC output voltages
are always referenced to the local DAC ground pin. For example,
if the AGNDA pin is at +5 mV with respect to the REFGND pin,
and VOUTA is measured with respect to AGNDA, a 5 mV error
results, enabling the local ground offset adjust feature to adjust
VOUTA by +5 mV, thereby eliminating the error.
相关PDF资料 |
PDF描述 |
|---|---|
| VE-JWH-MW-S | CONVERTER MOD DC/DC 52V 100W |
| LTC2758BILX#PBF | IC DAC 18BIT SPI/SRL 48-LQFP |
| AD569JPZ-REEL | IC DAC 16BIT MONO NON-LIN 28PLCC |
| VE-BND-MU-S | CONVERTER MOD DC/DC 85V 200W |
| VE-JW0-MZ-B1 | CONVERTER MOD DC/DC 5V 25W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5764SSUZ-EP-RL7 | 功能描述:16 Bit Digital to Analog Converter 4 32-TQFP (7x7) 制造商:analog devices inc. 系列:iCMOS? 包装:剪切带（CT） 零件状态:有效 位数:16 数模转换器数:4 建立时间:10μs 输出类型:Voltage - Buffered 差分输出:无 数据接口:SPI，DSP 参考类型:外部 电压 - 电源，模拟:±11.4 V ~ 16.5 V 电压 - 电源，数字:2.7 V ~ 5.25 V INL/DNL（LSB）:±2（最大），±1（最大） 架构:R-2R 工作温度:-55°C ~ 125°C 封装/外壳:32-TQFP 供应商器件封装:32-TQFP（7x7） 标准包装:1 |
| AD5765 | 制造商:AD 制造商全称:Analog Devices 功能描述:Complete Quad, 16-Bit, High Accuracy, Serial Input, ±5V DACs |
| AD5765BSUZ | 功能描述:IC DAC 16BIT +/-5V QUAD 2LSB 32L 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 |
| AD5765BSUZ-REEL7 | 功能描述:IC DAC 16BIT 5V QUAD 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 |
| AD5765CSUZ | 功能描述:IC DAC 16BIT QUAD 5V 1LSB 32TQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:1 系列:- 设置时间:4.5µs 位数:12 数据接口:串行，SPI? 转换器数目:1 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOICN 包装:剪切带 (CT) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:* 其它名称:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
发布紧急采购，3分钟左右您将得到回复。