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参数资料
| 型号： | AD660BR-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC DAC 16BIT MONO W/VREF 24-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1,000 |
| 系列： | DACPORT® |
| 设置时间： | 6µs |
| 位数： | 16 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字，双 ± |
| 功率耗散（最大）： | 625mW |
| 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： | 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）： | 167k |
AD660
Rev. B | Page 10 of 20
THEORY OF OPERATION
The AD660 uses an array of bipolar current sources with MOS
current steering switches to develop a current proportional to the
applied digital word, ranging from 0 mA to 2 mA. A segmented
architecture is used, where the most significant four data bits
are thermometer decoded to drive 15 equal current sources.
The lesser bits are scaled using a R-2R ladder, then applied
together with the segmented sources to the summing node of
the output amplifier. The internal span/bipolar offset resistor
can be connected to the DAC output to provide a 0 V to 10 V
span, or it can be connected to the reference input to provide a
10 V to +10 V span.
HBE
CONTROL
LOGIC
SER
CLR
LDAC
REF IN
10k
10.05k
REF OUT
DB0/
DB8/
SIN
DB1/DB9/
DATADIR
CS
DB7/
DB15
AD660
SOUT
VOUT
AGND
SPAN/
BIPOLAR
OFFSET
DGND
–VEE
+VCC
+VLL
10V REF
16-BIT LATCH
16-BIT DAC
16-BIT LATCH
16
17
18
19
23
24
20
21
22
13
5
1
2
3
4
11
12
14
15
01
81
3-
0
07
LBE/
CLEAR SELECT
Figure 7. Functional Block Diagram
ANALOG CIRCUIT CONNECTIONS
Internal scaling resistors provided in the AD660 can be connected
to produce a unipolar output range of 0 V to 10 V or a bipolar
output range of 10 V to +10 V. Gain and offset drift are mini-
mized in the AD660 because of the thermal tracking of the
scaling resistors with other device components.
UNIPOLAR CONFIGURATION
The configuration shown in Figure 8 provides a unipolar 0 V to
10 V output range. In this mode, 50 Ω resistors are tied between
the SPAN/BIPOLAR OFFSET terminal (Pin 22) and VOUT (Pin 21),
and between REF OUT (Pin 24) and REF IN (Pin 23). It is possible
to use the AD660 without any external components by tying Pin 24
directly to Pin 23 and Pin 22 directly to Pin 21. Eliminating
these resistors increases the gain error by 0.25% of FSR.
HBE
CONTROL
LOGIC
SER
CLR
LDAC
REF IN
REF OUT
AD660
SOUT
VOUT
AGND
OUTPUT
R2
50
R1
50
SPAN/
BIPOLAR
OFFSET
DGND
–VEE
+VCC
+VLL
10V REF
16-BIT LATCH
16-BIT DAC
16
17
18
19
23
24
20
21
22
13
1
2
3
4
15
01
813
-00
8
10k
10.05k
DB1/DB9/
DATADIR
11
LBE/
CLEAR SELECT
DB0/
DB8/
SIN
CS
DB7/
DB15
5
12
14
16-BIT LATCH
Figure 8. 0 V to 10 V Unipolar Voltage Output
If it is desired to adjust the gain and offset errors to zero, this
can be accomplished using the circuit shown in Figure 9. The
adjustment procedure is as follows:
1.
Zero adjust.
Turn all bits off and adjust the zero trimmer, R4, until the
output reads 0.000000 V (1 LSB = 153 μV).
2.
Gain adjust.
Turn all bits on and adjust the gain trimmer, R1, until the
output is 9.999847 V. (Full scale is adjusted to 1 LSB less
than the nominal full scale of 10.000000 V.)
HBE
CONTROL
LOGIC
SER
CLR
LDAC
REF IN
REF OUT
AD660
SOUT
VOUT
AGND
OUTPUT
R2
50
R3
16k
R4
10k
R1
100
SPAN/
BIPOLAR
OFFSET
DGND
–VEE
+VCC
–VEE
+VCC
+VLL
10V REF
16-BIT LATCH
16-BIT DAC
16
17
18
19
23
24
20
21
22
13
1
2
3
4
15
01
81
3-
0
09
10k
10.05k
DB1/DB9/
DATADIR
11
LBE/
CLEAR SELECT
DB0/
DB8/
SIN
CS
DB7/
DB15
5
12
14
16-BIT LATCH
Figure 9. 0 V to 10 V Unipolar Voltage Output with Gain and Offset
Adjustment
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相关代理商/技术参数 |
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| AD660BRZ | 功能描述:IC DAC 16BIT MONO W/VREF 24-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:DACPORT® 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 |
| AD660BRZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Monolithic 16-Bit Serial/Byte DACPORT |
| AD660BRZ-REEL | 功能描述:IC DAC 16BIT MONO W/VREF 24-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:DACPORT® 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 |
| AD660BRZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Monolithic 16-Bit Serial/Byte DACPORT |
| AD660KWOHLBOX | 制造商:Advanced Micro Devices 功能描述:AMD A-SERIES APU A8-6600K X4 BE 4300MHZ 4MB FM2 100W PIB - Boxed Product (Development Kits) |
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