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參數(shù)資料
| 型號： | AD7225KR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | DAC |
| 英文描述： | LC2MOS Quad 8-Bit DAC with Separate Reference Inputs |
| 中文描述： | PARALLEL, 8 BITS INPUT LOADING, 8-BIT DAC, PDSO24 |
| 封裝： | ROHS COMPLIANT, MS-013AD, SOIC-24 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 339K |
| 代理商： | AD7225KR |
AD7225
REV. B
–11–
MICROPROCE SSOR INT E RFACE
8085A/
8088
A15
A8
ALE
AD0
AD7
ADDRESS
DECODE
LATCH
EN
AD7225*
WR
A0
A1
LDAC
DB7
DB0
WR
ADDRESS BUS
ADDRESS DATA BUS
*
LINEAR CIRCUITRY OMITTED FOR CLARITY
Figure 22. AD7225 to 8085A/8088 Interface,
Double-Buffered Mode
6809/
6502
A15
A0
E OR
φ
2
D0
D7
AD7225*
R/W
A0
A1
LDAC
DB7
DB0
WR
ADDRESS BUS
DATA BUS
*
LINEAR CIRCUITRY OMITTED FOR CLARITY
ADDRESS
DECODE
EN
Figure 23. AD7225 to 6809/6502 Interface,
Single-Buffered Mode
Z-80
A15
A8
D0
D7
AD7225*
WR
A0
A1
LDAC
DB7
DB0
WR
ADDRESS BUS
DATA BUS
*
LINEAR CIRCUITRY OMITTED FOR CLARITY
ADDRESS
DECODE
EN
MREQ
Figure 24. AD7225 to Z-80 Interface,
Double-Buffered Mode
68008
A23
A1
D0
D7
AD7225*
R/W
A0
A1
DB7
DB0
LDAC
WR
ADDRESS BUS
DATA BUS
*
LINEAR CIRCUITRY OMITTED FOR CLARITY
ADDRESS
DECODE
EN
AS
DTACK
Figure 25. AD7225 to 68008 Interface,
Single-Buffered Mode
V
SS
GE NE RAT ION
Operating the AD7225 from dual supplies results in enhanced
performance over single supply operation on a number of pa-
rameters as previously outlined. Some applications may require
this enhanced performance, but may only have a single power
supply rail available. T he circuit of Figure 26 shows a method of
generating a negative voltage using one CD4049, operated from
a V
DD
of +15 V. T wo inverters of the hex inverter chip are used
as an oscillator. T he other four inverters are in parallel and used
as buffers for higher output current. T he square-wave output is
level translated to a negative-going signal, then rectified and fil-
tered. T he circuit configuration shown will provide an output
voltage of –5.1 V for current loadings in the range 0.5 mA to
9 mA. T his will satisfy the AD7225 I
SS
requirement over the
commercial operating temperature range.
1/6
CD4049AE
1/6
CD4049AE
1/6
CD4049AE
1/6
CD4049AE
1N4001
510
1/6
CD4049AE
5.1k
1/6
CD4049AE
510k
+
+
–V
OUT
5V1
47
μ
F
1N4001
47
μ
F
0.02
μ
F
Figure 26. V
SS
Generation Circuit
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| AD7225KR-REEL | 功能描述:IC DAC 8BIT QUAD W/AMP 24-SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7225KRZ | 功能描述:IC DAC 8BIT QUAD W/AMP 24SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7225KRZ-REEL | 功能描述:IC DAC 8BIT QUAD W/AMP 24SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標準包裝:2,400 系列:- 設(shè)置時間:- 位數(shù):18 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:3 電壓電源:模擬和數(shù)字 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:36-TFBGA 供應商設(shè)備封裝:36-TFBGA 包裝:帶卷 (TR) 輸出數(shù)目和類型:* 采樣率（每秒）:* |
| AD7225LN | 功能描述:IC DAC 8BIT LC2MOS QUAD 24-DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設(shè)置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設(shè)備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD7225LNZ | 功能描述:IC DAC 8BIT LC2MOS QUAD 24-DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標準包裝:1 系列:- 設(shè)置時間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
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