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參數(shù)資料
| 型號： | MAX1048BETX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 21/39頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC/DAC 10BIT 36-TQFN-EP |
| 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）： | 10 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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MAX1040/MAX1042/MAX1046/MAX1048
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
28
______________________________________________________________________________________
Output-Data Format
Figures 6–9 illustrate the conversion timing for the
MAX1040/MAX1042/MAX1046/MAX1048. All 10-bit con-
version results are output in 2-byte format, MSB first,
with four leading zeros and the LSB followed by 2 sub-
bits. Data appears on DOUT on the falling edges of
SCLK. Data is binary for unipolar mode and two’s com-
plement 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 / 1024 for
unipolar and bipolar operation, and 1 LSB = +0.125°C
for temperature measurements. Bipolar true-differential
results and temperature-sensor results are available in
two’s complement format, while all others are in binary.
See Tables 6, 7, and 8 for details on which setting
(unipolar or bipolar) takes precedence.
In unipolar mode, AIN+ can exceed AIN- by up to
VREF1. In bipolar mode, either input can exceed the
other by up to V/2.
Table 18. DAC Power-Up and Power-Down Commands
CONTROL
BITS
DATA BITS
C3 C2 C1 C0 X
X
DAC3
DAC2
DAC1
DAC0
D3 D2 D1 D0
DESCRIPTION
FUNCTION
1
X
———— 0
0
1
X
Power-Up
Power up individual DAC buffers indicated by data
in DAC0 through DAC3. A one indicates the DAC
output is connected and active. A zero does not
affect the DAC’s present state.
1
X
———— 0
1
0
X
Power-Down 1
Power down individual DAC buffers indicated by
data in DAC0 through DAC3. A one indicates the
DAC output is disconnected and high impedance.
A zero does not affect the DAC’s present state.
1
X
———— 1
0
X
Power-Down 2
Power down individual DAC buffers indicated by
data in DAC0 through DAC3. A one indicates the
DAC output is disconnected and pulled to AGND
with a 1k
Ω resistor. A zero does not affect the DAC’s
present state.
1
X
———— 0
0
X
Power-Down 3
Power down individual DAC buffers indicated by
data in DAC0 through DAC3. A one indicates the
DAC output is disconnected and pulled to AGND
with a 100k
Ω resistor. A zero does not affect the
DAC’s present state.
1
X
———— 1
1
X
Power-Down 4
Power down individual DAC buffers indicated by
data in DAC0 through DAC3. A one indicates the
DAC output is disconnected and pulled to REF1 with
a 100k
Ω resistor. A zero does not affect the DAC’s
present state.
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