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参数资料
| 型号： | AD7777ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/12页 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 4CH HS 28SOIC |
| 标准包装： | 27 |
| 位数： | 10 |
| 采样率（每秒）： | 378k |
| 数据接口： | 并联 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 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： | 管件 |
| 输入数目和类型： | 4 个单端，单极 |
AD7776/AD7777/AD7778
–8–
REV. A
Microprocessor Interfacing Circuits
The AD7776/AD7777/AD7778 family of ADCs is intended to
interface to DSP machines such as the ADSP-2101, ADSP-2105,
the TMS320 family and microcontrollers such as the 80C196
family.
Figure 7 shows the AD7776/AD7777/AD7778 interfaced to the
TMS320C10 at 20.5 MHz and the TMS320C14 at 25 MHz.
Figure 8 shows the interface with the TMS320C25 at 40 MHz.
Note that one wait state is required with this interface. The
ADSP-2101-50 and the ADSP-2105-40 interface is shown in
Figure 9. One wait state is required with these machines.
*ADDITIONAL PINS OMITTED FOR CLARITY
ADDRESS BUS
DATA BUS
D15–D0
TMS320C10-20.5
TMS320C14-25
A11–A0
WE
(C10) DEN
(C14) REN
CS
DB9–DB0
RD
WR
AD7776/
AD7777/
AD7778*
ADDR
DECODE
Figure 7. AD7776/AD7777/AD7778 to TMS320C10 and
TMS320C14 Interface
ADDRESS BUS
DATA BUS
*ADDITIONAL PINS OMITTED FOR CLARITY
CS
DB9–DB0
RD
WR
D15–D0
A15–A0
IS
READY
MSC
STRB
R/W
TMS320C25-40
ADDR
DECODE
AD7776/
AD7777/
AD7778*
Figure 8. AD7776/AD7777/AD7778 to TMS320C25 Interface
Figure 10 shows the interface with the 80C196KB at 12 MHz
and the 80C196KC at 16 MHz. One wait state is required with
the 16 MHz machine. The 80C196 is configured to operate
with a 16-bit multiplexed address/data bus.
Table I provides a truth table for the AD7776/AD7777/AD7778
and summarizes their microprocessor interfacing features. Note
that a read instruction to any of the devices while a conversion
is in progress immediately stops that conversion and returns
unreliable data over the data bus.
*ADDITIONAL PINS OMITTED FOR CLARITY
ADDRESS BUS
DATA BUS
CS
DB9–DB0
RD
WR
D23–D6
A13–A0
WR
RD
ADSP-2101-50
ADSP-2105-40
ADDR
DECODE
EN
DMS
AD7776/
AD7777/
AD7778*
Figure 9. AD7776/AD7777/AD7778 to ADSP-2101 and
ADSP-2105 Interface
*ADDITIONAL PINS OMITTED FOR CLARITY
DATA BUS (10)
CS
DB9–DB0
AD7776/
AD7777/
AD7778*
RD
WR
ADDRESS BUS
WR
RD
80C196KB-12
80C196KC-16
AD15–AD6
(PORT 4)
ALE
‘373
LATCH
ADDR
DECODER
AD7–AD0
(PORT 3)
Figure 10. AD7776/AD7777/AD7778 to 80C196 Interface
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| AD7777ARZ-REEL | 功能描述:IC ADC 10BIT 4CHAN HS 28SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1,000 系列:- 位数:12 采样率（每秒）:300k 数据接口:并联 转换器数目:1 功率耗散（最大）:75mW 电压电源:单电源 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 包装:带卷 (TR) 输入数目和类型:1 个单端，单极；1 个单端，双极 |
| AD7778 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS, High Speed 1-, 4- & 8-Channel 10-Bit ADCs |
| AD7778AS | 制造商:Analog Devices 功能描述:ADC Single SAR 378ksps 10-bit Parallel 44-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:8-CH 10-BIT ADC IC - Bulk |
| AD7778ASZ | 功能描述:IC ADC 10BIT 8CHAN HS 44-MQFP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
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