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参数资料
| 型号： | AD7834ARZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 28/28页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT QUAD SERIAL 28SOIC |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1,000 |
| 设置时间： | 10µs |
| 位数： | 14 |
| 数据接口： | 串行 |
| 转换器数目： | 4 |
| 电压电源： | 模拟和数字，双 ± |
| 功率耗散（最大）： | 465mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 28-SOIC W |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 4 电压，单极；4 电压，双极 |
| 采样率（每秒）： | 100k |
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AD7834/AD7835
Rev. D | Page 9 of 28
9
10
11
12
13
7
8
16
17
14
15
244
3
4
5
642 41 40
43
35
36
37
38
39
33
34
31
32
29
30
18 19 20 21 22 23 24 25 26 27 28
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
DB4
DB5
DB6
DB1
CS
WR
V
CC
DGND
DB0
DB2
DB3
NC
DSGB
VOUT3
VOUT4
DB13
DB12
DB11
AD7835
NC
DSGA
VOUT1
VOUT2
NC
A2
A1
NC = NO CONNECT
A0
CLR
LDAC
BYSHF
DB10
DB9
DB8
DB7
NC
V
RE
F
(+)A
NC
V
SS
V
DD
AGND
NC
V
RE
F
(+)B
V
RE
F
(–
)A
NC
V
RE
F
(–
)B
01006-008
1
12 13 14 15 16 17 18 19 20 21 22
3
4
5
6
7
1
2
10
11
8
9
40 39 38
41
42
43
44
36 35 34
37
29
30
31
32
27
28
25
26
23
24
33
PIN 1
IDENTIFIER
TOP VIEW
(Not to Scale)
NC
DSGB
VOUT3
VOUT4
DB13
DB12
DB11
AD7835
DB1
CS
WR
V
CC
DGND
DB0
DB2
DB3
DB4
DB5
DB6
NC
DSGA
VOUT1
VOUT2
NC
A2
A1
NC = NO CONNECT
A0
CLR
LDAC
BYSHF
DB10
DB9
DB8
DB7
NC
V
RE
F
(–
)A
V
RE
F
(+)A
NC
V
SS
V
DD
AGND
NC
V
RE
F
(+)B
V
RE
F
(–)B
01006-007
Figure 7. AD7835 MQFP Pin Configuration
Figure 8. AD7835 PLCC Pin Configuration
Table 8. AD7835 Pin Function Descriptions
Pin No.
MQFP
Pin No. PLCC
Pin Mnemonic
Description
NC
No Connect.
1, 5, 33, 34,
37, 41, 44
3, 6, 7, 11, 39,
40, 43
2
8
DSGA
Device Sense Ground A Input. Used in conjunction with the CLR input for power-on
protection of the DACs. When CLR is low, DAC outputs VOUT1 and VOUT2 are forced to the
potential on the DSGA pin.
VOUT1 to VOUT4
3, 4, 31, 30
9, 10, 37, 36
DAC Outputs.
8, 7, 6
14, 13, 12
A0, A1, A2
Address Inputs. A0 and A1 are decoded to select one of the four input latches for a data
transfer. A2 is used to select all four DACs simultaneously.
9
15
CLR
Asynchronous Clear Input (Level Sensitive, Active Low). When this input is brought low,
all analog outputs are switched to the externally set potentials on the DSG pins (VOUT1
and VOUT2 follow DSGA, and VOUT3 and VOUT4 follow DSGB). When CLR is brought high, the
signal outputs remain at the DSG potentials until LDAC is brought low. When LDAC is
brought low, the analog outputs are switched back to reflect their individual DAC output
levels. As long as CLR remains low, the LDAC signals are ignored, and the signal outputs
remain switched to the potential on the DSG pins.
10
16
LDAC
Load DAC Input (Level Sensitive). This input signal, in conjunction with the WR and CS
input signals, determines how the analog outputs are updated. If LDAC is maintained
high while new data is being loaded into the device’s input registers, no change occurs
on the analog outputs. Subsequently, when LDAC is brought low, the contents of all four
input registers are transferred into their respective DAC latches, updating the analog
outputs simultaneously. Alternatively, if LDAC is brought low while new data is being
entered, the addressed DAC latch and corresponding analog output are updated
immediately on the rising edge of WR.
11
17
BYSHF
Byte Shift Input. When low, it shifts the data on DB0 to DB7 into the DB8 to DB13 half of
the input register.
12
18
CS
Level-Triggered Chip Select Input (Active Low). The device is selected when this input is
low.
13
19
WR
Level-Triggered Write Input (Active Low). When active, it is used in conjunction with CS
to write data over the input databus.
14
20
VCC
Logic Power Supply: 5 V ± 5%.
15
21
DGND
Digital Ground.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7834BN | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 14-bit 28-Pin PDIP W Tube 制造商:Rochester Electronics LLC 功能描述:QUAD 14 BIT SERIAL DAC IC - Bulk |
| AD7834BNZ | 制造商:Analog Devices 功能描述:DAC 4-CH R-2R 14-bit 28-Pin PDIP W Tube |
| AD7834BR | 功能描述:IC DAC 14BIT QUAD SRL 28-SOIC 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 工作温度:0°C ~ 70°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:8 电压，单极 采样率（每秒）:* |
| AD7834BR-REEL | 功能描述:IC DAC 14BIT QUAD SRL 28-SOIC 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:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 工作温度:0°C ~ 70°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:8 电压，单极 采样率（每秒）:* |
| AD7834BRZ | 功能描述:IC DAC 14BIT QUAD SRL 28-SOIC 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 |
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