参数资料
| 型号： | AD420AR-32 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC SRL 16BIT 24-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 31 |
| 设置时间： | 2.5µs |
| 位数： | 16 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 176mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 管件 |
| 输出数目和类型： | 2 电流，双极 |
| 采样率（每秒）： | 400 |
AD420
Rev. H | Page 6 of 16
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
00
49
4-
00
2
NC 1
VLL 2
FAULT DETECT 3
RANGE SELECT 2 4
NC
24
VCC
23
NC
22
CAP 2
21
RANGE SELECT 1 5
CAP 1
20
CLEAR 6
BOOST
19
LATCH 7
IOUT
18
CLOCK 8
VOUT
17
DATA IN 9
OFFSET TRIM
16
DATA OUT 10
REF IN
15
GND 11
REF OUT
14
NC 12
NC
13
NC = NO CONNECT
AD420
TOP VIEW
(Not to Scale)
Figure 2. Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Function
1, 12,
13, 24
NC
No Connection. No internal connections inside device.
2
VLL
Auxiliary buffered +4.5 V digital logic voltage. This pin is the internal supply voltage for the digital
circuitry and can be used as a termination for pull-up resistors. An external +5 V power supply can be
connected to VLL. It will override this buffered voltage, thus reducing the internal power dissipation. The
section.
3
FAULT DETECT
FAULT DETECT, connected to a pull-up resistor, is asserted low when the output current does not match
the DAC’s programmed value, for example, in case the current loop is broken.
4
RANGE SELECT 2
Selects the converter’s output operating range. One output voltage range and three
5
RANGE SELECT 1
output current ranges are available.
6
CLEAR
Valid VIH unconditionally forces the output to go to the minimum of its programmed range. After CLEAR
is removed the DAC output will remain at this value. The data in the input register is unaffected.
7
LATCH
In the 3-wire interface mode a rising edge parallel loads the serial input register data into the DAC. To
use the asynchronous mode connect LATCH through a current limiting resistor to VCC.
8
CLOCK
Data Clock Input. The clock period is equal to the input data bit rate in the 3-wire interface mode and is
16 times the bit rate in asynchronous mode.
9
DATA IN
Serial Data Input.
10
DATA OUT
Serial Data Output. In the 3-wire interface mode, this output can be used for daisy-chaining multiple
AD420s. In the asynchronous mode a positive pulse will indicate a framing error after the stop-bit is
received.
11
GND
Ground (Common).
14
REF OUT
+5 V Reference Output.
15
REF IN
Reference Input.
16
OFFSET TRIM
Offset Adjust.
17
VOUT
Voltage Output.
18
IOUT
Current Output.
19
BOOST
Connect to an external transistor to reduce the power dissipated in the AD420 output transistor, if
desired.
20
CAP 1
These pins are used for internal filtering. Connect capacitors between each of these
21
CAP 2
pins and VCC. Refer to the description of current output operation.
22
NC
No Connection. Do not connect anything to this pin.
23
VCC
Power Supply Input. The VCC pin should always be decoupled to GND with a 0.1 μF capacitor. See the
Power Supplies and Decoupling section.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD420AR-32 | 制造商:Analog Devices 功能描述:SEMICONDUCTORSLINEAR |
| AD420AR-32-REEL | 功能描述:IC DAC SNGL 16BIT 24-SOIC T/R RoHS:否 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 |
| AD420ARZ-32 | 功能描述:IC DAC SRL 16BIT 24-SOIC 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) |
| AD420ARZ-32-REEL | 功能描述:IC DAC SERIAL INPUT 16BIT 24SOIC 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 |
| AD421 | 制造商:AD 制造商全称:Analog Devices 功能描述:Loop-Powered 4 mA to 20 mA DAC |
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