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參數(shù)資料
| 型號： | MAX1447ECJ+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/24頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 4 1/2DIG W/LED DVR 32TQFP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 250 |
| 位數(shù)： | 4.5 位 |
| 采樣率（每秒）： | 50 |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 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： | 32-TQFP |
| 供應商設(shè)備封裝： | 32-TQFP（5x5） |
| 包裝： | 管件 |
| 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
10
______________________________________________________________________________________
Detailed Description
The MAX1447/MAX1496/MAX1498 low-power, highly
integrated ADCs with LED drivers convert a ±2V differ-
ential input voltage (one count is equal to 100V for the
MAX1447/MAX1498 and 1mV for the MAX1496) with a
sigma-delta ADC and output the result to an LED. An
additional ±200mV input range (one count is equal to
10V for the MAX1447/MAX1498 and 100V for the
MAX1496) is available to measure small signals with
increased resolution.
The devices operate from a single 2.7V to 5.25V power
supply and offer 3.5-digit (MAX1496) or 4.5-digit
(MAX1447/MAX1498) conversion results. An internal
2.048V reference, internal charge pump, and a high-accu-
racy on-chip oscillator eliminate external components.
The devices also feature on-chip buffers for the differen-
tial input signal and external-reference inputs, allowing
direct interface with high-impedance signal sources. In
addition, they use continuous internal offset-calibration
and offer >100dB of 50Hz and 60Hz line-noise rejec-
tion. Other features include data hold and peak detec-
tion and overrange/underrange detection.
Analog Input Protection
Internal protection diodes limit the analog input range
from VNEG to (AVDD + 0.3V) for the MAX1447/
MAX1498, and from VNEG to (VDD + 0.3V) for the
MAX1496. If the analog input exceeds this range, limit
the input current to 10mA.
Internal Analog Input/Reference Buffers
The MAX1447/MAX1496/MAX1498 analog input/refer-
ence buffers allow the use of high-impedance signal
sources. The input buffers’ common-mode input range
allows the analog inputs and the reference to range from
-2.2V to +2.2V.
Pin Description (continued)
PIN
MAX1496
MAX1447/
MAX1498
NAME
FUNCTION
19
18
DIG3
Digit 3 Driver
20
SEGA
Segment A Driver
21
SEGB
Segment B Driver
22
SEGC
Segment C Driver
23
SEGD
Segment D Driver
24
SEGE
Segment E Driver
25
VLED
LED Display Segment Driver Supply. Connect to a +2.7V to +5.25V supply. Bypass with a
0.1F capacitor to GLED.
26
SEGF
Segment F Driver
27
SEGG
Segment G Driver
28
SEGDP
Segment DP Driver
—6
AVDD
Analog Positive Supply Voltage. Connect AVDD to a +2.7V to +5.25V power supply. Bypass
AVDD to GND with a 0.1F capacitor.
—7
DVDD
Digital Positive Supply Voltage. Connect DVDD to a +2.7V to +5.25V power supply. Bypass
DVDD to GND with a 0.1F capacitor.
—19
DIG4
Digit 4 Driver
—29
LED_EN
Active-High LED Enable. The MAX1447/MAX1498 display driver turns off when the LED_EN
is driven to logic low. The MAX1447/MAX1498 LED display driver turns on when LED_EN is
driven to logic high.
—30
DPON
Decimal-Point Enable Input. Controls the decimal point of the LED. See the Decimal-Point
Control section. Connect to DVDD (MAX1447/MAX1498) or VDD (MAX1496) to enable the
decimal point.
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| MAX1447ECJ+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5-Digit 5sps ADC w/LED Drivers 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 |
| MAX1447ECJ+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5-Digit 5sps ADC w/LED Drivers 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 |
| MAX1447ECJ-T | 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 |
| MAX1448EHJ | 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 |
| MAX1448EHJ+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 80Msps 3V High Speed 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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