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參數(shù)資料
| 型號： | MAX1496EAI+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/24頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 3.5DIGIT LED DRVR 28-SSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,000 |
| 位數(shù)： | 3.5 位 |
| 采樣率（每秒）： | 5 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 28-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個差分，雙極 |
MAX1447/MAX1496/MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
______________________________________________________________________________________
19
(PD x TJA) max = (+125°C) - (+85°C) = +40°C
PD (max) = +40°C /+105.3°C/W = 380mW
(VLED - VDIODE) = [380mW - (5.25V x 2mA) - 5.25V x
1.080mA] / [(127 / 128) x 25.5mA x 8]
VLED - VDIODE = 1.854V
VLED - VDIODE should have the following condition to
ensure it operates safely:
0.8V < VLED - VDIODE < 1.854V
28-Pin PDIP-Package Example
PD x TJA (max) = (+125°C) - (+85°C) = +40°C
PD (max) = +40°C / +70°C/W = 571mW
VLED - VDIODE = [571mW - (5.25V x 2mA) - 5.25V x
1.080mA] / [(127 / 128) x 25.5mA x 8]
VLED - VDIODE = 2.80V
For a 28-pin PDIP package, VLED - VDIODE should have
the following condition to ensure it operates safely:
0.8V < VLED - VDIODE < 2.80V
32-Pin TQFP Package
The MAX1447/MAX1498 TQFP package can operate
safely for all supply voltages provided VDIODE > 1.5V.
Definitions
INL
Integral nonlinearity (INL) is the deviation of the values
on an actual transfer function from a straight line. This
straight line is either a best-straight-line fit or a line
drawn between the end points of the transfer function,
once offset and gain errors have been nullified. INL for
the MAX1447/MAX1496/MAX1498 is measured using
the end-point method.
DNL
Differential nonlinearity (DNL) 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.
Rollover Error
Rollover error is defined as the absolute-value differ-
ence between a near positive full-scale reading and
near negative full-scale reading. Rollover error is tested
by applying a full-scale positive voltage, swapping
AIN+ and AIN-, and adding the results.
Zero Input Reading
Ideally, with AIN+ connected to AIN-, the MAX1447/
MAX1496/MAX1498 LED displays zero. Zero input
reading is the measured deviation from the ideal zero
and the actual measured point.
Gain Error
Gain error is the amount of deviation between the mea-
sured full-scale transition point and the ideal full-scale
transition point.
Common-Mode Rejection
Common-mode rejection (CMR) is the ability of a
device to reject a signal that is common to both input
terminals. The common-mode signal can be either an
AC or a DC signal or a combination of the two. CMR is
often expressed in decibels.
Normal-Mode 50Hz and 60Hz Rejection
(Simultaneously)
Normal-mode rejection is a measure of how much output
changes when 50Hz and 60Hz signals are injected into
only one of the differential inputs. The MAX1447/
MAX1496/MAX1498 sigma-delta converter uses its inter-
nal digital filter to provide normal-mode rejection to both
50Hz and 60Hz power-line frequencies simultaneously.
Power-Supply Rejection Ratio
Power-supply rejection ratio (PSRR) is the ratio of the input
supply change (in volts) to the change in the converter
output (in volts). It is typically measured in decibels.
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| MAX1496EPI | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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