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| 型號： | LTC1273ACN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | ADC |
| 英文描述： | 12-Bit, 300ksps Sampling A/D Converters with Reference |
| 中文描述： | 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-24 |
| 文件頁數(shù)： | 19/24頁 |
| 文件大?。?/td> | 451K |
| 代理商： | LTC1273ACN |
19
LTC1273
LTC1275/LTC1276
U
S
A
TMS320C25
O
PPLICATI
U
U
Figure 17 shows an interface between the LTC1273 and
the TMS320C25.
The W/R signal of the DSP initiates a conversion and
conversion results are read from the LTC1273 using the
following instruction:
IN
D, PA
where D is Data Memory Address and PA is the PORT
ADDRESS.
Figure 17. TMS320C25 Interface
DATA BUS
LTC1273/75/76 F17
ADDRESS BUS
D0
D16
R/W
READY
IS
A1
A16
TMS320C25
ADDRESS
DECODE
EN
D0/8
D11
RD
BUSY
CS
HBEN
LTC1273/75/76
ADDITIONAL PINS OMITTED FOR CLARITY
DATA BUS
LTC1273/75/76 F18
ADDRESS BUS
D0
D11
R/W
DTACK
AS
A1
A23
MC68000
ADDRESS
DECODE
EN
D0/8
D11
RD
BUSY
CS
HBEN
LTC1273/75/76
ADDITIONAL PINS OMITTED FOR CLARITY
Figure 18. MC68000 Interface
8085A/Z80 Microprocessor
Figure 19 shows an LTC1273 interface for the Z80/8085A.
The LTC1273 is operating in the Slow Memory Mode and
a two byte read is required. Not shown in the figure is the
8-bit latch required to demultiplex the 8085A common
address/data bus. A0 is used to assert HBEN so that an
even address (HBEN = LOW) to the LTC1273 will start a
conversion and read the low data byte. An odd address
(HBEN = HIGH) will read the high data byte. This is
accomplished with the single 16-bit LOAD instruction
below.
For the 8085A
For the Z80
LHLD (B000)
LDHL, (B000)
Figure 19. 8085A and Z80 Interface
DATA BUS
LTC1273/75/76 F19
ADDRESS BUS
D0
D7
RD
WAIT
MREQ
A0
A15
Z80
8085A
ADDRESS
DECODE
EN
D0/8
D7
RD
BUSY
LTC1273/75/76
CS
HBEN
ADDITIONAL PINS OMITTED FOR CLARITY
A0
MC68000 Microprocessor
Figure 18 shows a typical interface for the MC68000. The
LTC1273 is operating in the Slow Memory Mode. Assum-
ing the LTC1273 is located at address C000, then the
following single 16-bit MOVE instruction both starts a
conversion and reads the conversion result:
Move.W $C000,D0
At the beginning of the instruction cycle when the ADC
address is selected, BUSY and CS assert DTACK so that
the MC68000 is forced into a WAIT state. At the end of
conversion, BUSY returns high and the conversion result
is placed in the D0 register of the microprocessor.
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| LTC1273ACS | 12-Bit, 300ksps Sampling A/D Converters with Reference |
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| LTC1273BCS | 12-Bit, 300ksps Sampling A/D Converters with Reference |
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| LTC1273ACN#PBF | 功能描述:IC A/D CONV 12BIT SAMPLING 24DIP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| LTC1273ACSW | 功能描述:IC A/D CONV 12BIT SAMPLNG 24SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| LTC1273ACSW#PBF | 功能描述:IC A/D CONV 12BIT SAMPLNG 24SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| LTC1273ACSW#TR | 功能描述:IC ADC 12BIT SAMPLING REF 24SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
| LTC1273ACSW#TRPBF | 功能描述:IC A/D CONV 12BIT SAMPLNG 24SOIC RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 模數(shù)轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 位數(shù):12 采樣率（每秒）:300k 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數(shù)目和類型:1 個單端，單極；1 個單端，雙極 |
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