参数资料
| 型号： | AD8802AR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/16页 |
| 文件大小： | 0K |
| 描述： | IC DAC 8BIT 12CH W/SD 20-SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 37 |
| 系列： | TrimDAC® |
| 设置时间： | 600ns |
| 位数： | 8 |
| 数据接口： | 串行 |
| 转换器数目： | 12 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 60µW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC W |
| 包装： | 管件 |
| 输出数目和类型： | 12 电压，单极 |
| 采样率（每秒）： | 1.7M |
AD8802/AD8804
REV. 0
–6–
HOURS OF OPERATION AT 150
°C
0.04
–0.04
0
–0.02
0.02
0
600
200
300
500
VDD = +4.5V
VREF = +4.5V
SS = 176 PCS
x + 2
σ
CHANGE
IN
FULL-SCALE
ERROR
–
LSB
x
x – 2
σ
100
400
Figure 13. Full-Scale Error Accelerated by Burn-In
HOURS OF OPERATION AT 150
°C
1.0
–1.0
0
–0.5
0.5
INPUT
RESISTANCE
DRIFT
–
k
0
600
200
300
400
VDD = +4.5V
VREF = +4.5V
CODE = 55H
SS = 176 PCS
x + 2
σ
x
x – 2
σ
100
500
Figure 14. REF Input Resistance Accelerated by Burn-In
OPERATION
The AD8802/AD8804 provides twelve channels of program-
mable voltage output adjustment capability. Changing the pro-
grammed output voltage of each DAC is accomplished by
clocking in a 12-bit serial data word into the SDI (Serial Data
Input) pin. The format of this data word is four address bits,
MSB first, followed by 8 data bits, MSB first. Table I provides
the serial register data word format. The AD8802/AD8804 has
the following address assignments for the ADDR decode which
determines the location of the DAC register receiving the serial
register data in Bits B7 through B0:
DAC# = A3
× 8 + A2 × 4 + A1 × 2 + A0 + 1
DAC outputs can be changed one at a time in random se-
quence. The fast serial-data loading of 33 MHz makes it pos-
sible to load all 12 DACs in as little time as 4.6
s (13
× 12 ×
30 ns). The exact timing requirements are shown in Figure 15.
Table I. Serial-Data Word Format
ADDR
DATA
B11 B10 B9
B8
B7
B6
B5
B4
B3
B2
B1 B0
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1 D0
MSB
LSB MSB
LSB
2
11
2
10
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
1
2
0
The AD8802 offers a midscale preset activated by the RS pin
simplifying initial setting conditions at first power-up. The
AD8804 has both a VREFH and a VREFL pin to establish indepen-
dent positive full-scale and zero-scale settings to optimize reso-
lution. Both parts offer a power shutdown SHDN which places
the DAC structure in a zero power consumption state resulting
in only leakage currents being consumed from the power supply
and VREF inputs. In shutdown mode the DACX register settings
are maintained. When returning to operational mode from
power shutdown the DAC outputs return to their previous volt-
age settings.
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
DAC REGISTER LOAD
1
0
1
0
1
0
+5V
0V
SDI
CLK
CS
VOUT
Figure 15a. Timing Diagram
AX OR DX
1
0
1
0
1
0
+5V
0V
SDI
(DATA IN)
CLK
CS
VOUT
±1/2 LSB
±1/2 LSB ERROR BAND
tCSH
tCL
tCSS
tDS
tDH
tCS1
DETAIL SERIAL DATA INPUT TIMING (RS = "1")
tCSW
tCH
tS
Figure 15b. Detail Timing Diagram
tS
tRS
±1 LSB
±1 LSB ERROR BAND
1
0
+5V
2.5V
RS
VOUT
RESET TIMING
Figure 15c. Reset Timing Diagram
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8802AR-REEL | 制造商:Analog Devices 功能描述:DAC 12-CH R-2R 8-bit 20-Pin SOIC W T/R |
| AD8802ARU | 功能描述:IC DAC 8BIT 12CH W/SD 20-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 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）:* |
| AD8802ARU-REEL | 功能描述:IC DAC 8BIT 12CH W/SD 20-TSSOP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 产品培训模块:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色产品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 标准包装:91 系列:- 设置时间:4µs 位数:10 数据接口:MICROWIRE?，串行，SPI? 转换器数目:8 电压电源:单电源 功率耗散（最大）:2.7mW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-DFN-EP（4x3） 包装:管件 输出数目和类型:8 电压，单极 采样率（每秒）:* |
| AD8802ARUZ | 功能描述:IC DAC 8BIT 12CH W/SD 20TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 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 |
| AD8802ARUZ-REEL | 功能描述:IC DAC 8BIT 12CH W/SD 20TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:TrimDAC® 产品培训模块:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色产品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 标准包装:91 系列:- 设置时间:4µs 位数:10 数据接口:MICROWIRE?，串行，SPI? 转换器数目:8 电压电源:单电源 功率耗散（最大）:2.7mW 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-WFDFN 裸露焊盘 供应商设备封装:14-DFN-EP（4x3） 包装:管件 输出数目和类型:8 电压，单极 采样率（每秒）:* |
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