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參數(shù)資料
| 型號： | MAX1220BETX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 27/43頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC/DAC 12BIT 36-TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | ADC，DAC |
| 分辨率（位）： | 12 b |
| 采樣率（每秒）： | 225k |
| 數(shù)據(jù)接口： | 串行 |
| 電壓電源： | 模擬和數(shù)字 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 36-TQFN 裸露焊盤（6x6） |
| 包裝： | 帶卷 (TR) |
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MAX1220/MAX1257/MAX1258
12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
______________________________________________________________________________________
33
If CS goes high prior to completing 16 SCLK cycles, the
command is discarded. To initiate a new transfer, drive
CS low again.
For example, writing the DAC serial interface word 1111
0000 and 1111 0100 disconnects DAC outputs 4
through 7 and forces them to a high-impedance state.
DAC outputs 0 through 3 remain in their previous state.
Output-Data Format
Figures 6–9 illustrate the conversion timing for the
MAX1220/MAX1257/MAX1258. All 12-bit conversion
results are output in 2-byte format, MSB first, with four
leading zeros. Data appears on DOUT on the falling
edges of SCLK. Data is binary for unipolar mode and
two’s complement for bipolar mode and temperature
results. See Figures 3, 4, and 5 for input/output and
temperature-transfer functions.
ADC Transfer Functions
Figure 3 shows the unipolar transfer function for single-
ended or differential inputs. Figure 4 shows the bipolar
transfer function for differential inputs. Code transitions
occur halfway between successive-integer LSB values.
Output coding is binary, with 1 LSB = VREF1/4096
(MAX1257) and 1 LSB = VREF1/4096 (MAX1220/
MAX1258) for unipolar and bipolar operation, and 1
LSB = +0.125°C for temperature measurements.
Bipolar true-differential results and temperature-sensor
Table 21. DAC Power-Up and Power-Down Commands
CONTROL
BITS
DATA BITS
C3 C2 C1 C0
DAC7
DAC6
DAC5
DAC4
DAC3
DAC2
DAC1
DAC0
D3 D2 D1 D0
DESCRIPTION
FUNCTION
1
——— ————— 0
0
1
X
Power-Up
Power up individual DAC buffers indicated by data
in DAC0 through DAC7. A one indicates the DAC
output is connected and active. A zero does not
affect the DAC’s present state.
1
——— ————— 0
1
0
X
Power-Down 1
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and high impedance.
A zero does not affect the DAC’s present state.
1
——— ————— 1
0
X
Power-Down 2
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to AGND
with a 1k
resistor. A zero does not affect the DAC’s
present state.
1
——— ————— 0
0
X
Power-Down 3
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to AGND
with a 100k
resistor. A zero does not affect the
DAC’s present state.
1
——— ————— 1
1
X
Power-Down 4
Power down individual DAC buffers indicated by
data in DAC0 through DAC7. A one indicates the
DAC output is disconnected and pulled to REF1 with
a 100k
resistor. A zero does not affect the DAC’s
present state.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1221BETX | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1221BETX+ | 功能描述:ADC / DAC多通道 12-Bit 8Ch 300ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1221BETX+T | 功能描述:ADC / DAC多通道 12-Bit 8Ch 300ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1221BETX-T | 功能描述:ADC / DAC多通道 RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| MAX1223BETX | 制造商:Maxim Integrated Products 功能描述:12-BIT MULTICHANNEL ADC/DAC WITH F - Rail/Tube |
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