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參數(shù)資料
| 型號(hào)： | MAX1254BEUE+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 20/29頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT W/REF 16-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 94k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 15mW |
| 電壓電源： | 模擬和數(shù)字，雙 ± |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 8 個(gè)單端，單極；8 個(gè)單端，雙極；4 個(gè)差分，單極；4 個(gè)差分，雙極 |
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MAX1253/MAX1254
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
______________________________________________________________________________________
27
Transfer Function
Figure 10 shows the nominal transfer function for single-
ended or differential unipolar configured inputs, Figure
11 illustrates the transfer function for differential bipolar
conversions, and Figure 12 shows temperature conver-
sions. Code transitions occur halfway between succes-
sive-integer LSB values. Output coding is binary, with
1 LSB = 610V (MAX1253) or 1mV (MAX1254) for unipo-
lar and bipolar operation, and 1 LSB = +0.125
°C
(MAX1253/MAX1254) for temperature measurements.
For unipolar operation, the 0 code level transition is at
[1/2(VREF / 4096)].
The FFF hex level transition is at [4094.5 (VREF / 4096)].
1 LSB = VREF / 4096.
Layout, Grounding, and Bypassing
For best performance, use PC boards. Do not use wire-
wrap boards. Board layout should ensure that digital
and analog signal lines are separated from each other.
Do not run analog and digital (especially clock) signals
parallel to one another or run digital lines underneath
the MAX1253/MAX1254 package. High-frequency
noise in the VDD power supply can affect the
MAX1253/MAX1254 performance. Bypass the VDD sup-
ply with a 0.1F capacitor from VDD to GND, close to
the VDD pin. Minimize capacitor lead lengths for best
supply-noise rejection. If the power supply is very
noisy, connect a 10
resistor in series with the supply
to improve power-supply filtering.
Definitions
Integral Nonlinearity
Integral nonlinearity is the deviation of the values on the
actual transfer function from a straight line. This straight
line can be either a best-straight-line fit or a line drawn
between the end points of the transfer function, once off-
set and gain errors have been corrected. The static lineari-
ty parameters for the MAX1253/MAX1254 are measured
using the end-point-fit method. INL is specified as the
maximum deviation in LSBs.
Differential Nonlinearity (DNL)
Differential nonlinearity is the difference between an
actual step width and the ideal value of 1 LSB. A DNL
error specification of less than 1 LSB guarantees no
missing codes and a monotonic transfer function.
Offset Error
The offset error is the difference between the ideal and
the actual analog input value at the first transition of the
ADC, usually from digital code 0 to code 1 for straight
binary output. For the MAX1253/MAX1254, the transi-
tion between code 0 and code 1 should occur at an
input voltage of 1/2 LSB, or 305V for the MAX1253
and 500V for the MAX1254.
OUTPUT CODE
011....111
TEMPERATURE
°C
011....110
000....001
111....101
100....001
100....000
111....111
111....110
000....000
0
000....010
-256
°C
+255.875
°C
Figure 12. Temperature Transfer Function
OUTPUT CODE
011....111
INPUT VOLTAGE (LSB)
011....110
000....001
111....101
100....001
100....000
111....111
111....110
000....000
0
000....010
-FS
+FS - 1 LSB
FS =
ZS = 0
VREF
2
-FS =
-VREF
2
1 LSB =
VREF
4096
Figure 11. Bipolar Transfer Function, Full Scale (±FS) = ±VREF/2
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| MAX1254EVC16 | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Stand-Alone 10-Channel 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1254EVKIT | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 Evaluation Kit/Evaluation System for the MAX1254 MAX1253 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX12553ETL | 制造商:Maxim Integrated Products 功能描述:14-BIT, 65MSPS, 3.3V ADC - Bulk |
| MAX12553ETL+ | 制造商:Maxim Integrated Products 功能描述:ADC SGL PIPELINED 65MSPS 14BIT PARALLEL 40TQFN - Rail/Tube |
| MAX12553ETL+T | 制造商:Maxim Integrated Products 功能描述:ADC SGL PIPELINED 65MSPS 14BIT PARALLEL 40TQFN - Tape and Reel |
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