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參數(shù)資料
| 型號： | MAX1491CNI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | ADC |
| 英文描述： | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
| 中文描述： | 1-CH DELTA-SIGMA ADC, PDIP28 |
| 封裝： | 0.300 INCH, PLASTIC, MO-058AB, DIP-28 |
| 文件頁數(shù)： | 1/25頁 |
| 文件大?。?/td> | 723K |
| 代理商： | MAX1491CNI |
General Description
The MAX1491/MAX1493/MAX1495 low-power, 3.5- and
4.5-digit, analog-to-digital converters (ADCs) with inte-
grated liquid crystal display (LCD) drivers operate from a
single 2.7V to 5.25V power supply. They include an inter-
nal reference, a high-accuracy on-chip oscillator, and a
triplexed LCD driver. An internal charge pump generates
the negative supply needed to power the integrated input
buffer for single supply operation. The ADC is config-
urable for either a ±2V or ±200mV input range and it out-
puts its conversion results to an LCD. The MAX1491 is a
3.5-digit (±1,999 count) device, and the MAX1493/
MAX1495 are 4.5-digit (±19,999 count) devices.
The MAX1491/MAX1493/MAX1495 do not require exter-
nal-precision integrating or auto-zero capacitors, crys-
tal oscillators, charge pumps or other circuitry required
with dual slope ADCs (commonly used in panel meter
circuits). These devices also feature on-chip buffers for
the differential signal and reference inputs, allowing
direct interface with high-impedance signal sources. In
addition, the MAX1491/MAX1493/MAX1495 use contin-
uous internal offset calibration, and offer >100dB rejec-
tion of 50Hz and 60Hz line noise. The MAX1493/
MAX1495 perform enhanced offset calibration at
power-up. The MAX1495 also performs enhanced cali-
bration on demand. Other features include data hold
and peak hold, and a user programmable low-battery
monitor.
The MAX1493/MAX1495 come in a 32-pin 7mm
7mm
TQFP package, and the MAX1491 comes in 28-pin
SSOP and 28-pin DIP packages. All devices in this fam-
ily operate over the 0°C to +70°C commercial tempera-
ture range.
Applications
Digital Panel Meters
Hand-Held Meters
Digital Voltmeters
Digital Multimeters
Features
o
High Resolution
MAX1495: 4.5 Digits (±19,999 Count)
MAX1493: 4.5 Digits (±19,999 Count)
MAX1491: 3.5 Digits (±1999 Count)
o
Sigma-Delta ADC Architecture
No Integrating Capacitors Required
No Autozeroing Capacitors Required
>100dB of Simultaneous 50Hz and 60Hz Rejection
o
Operate from a Single 2.7V or 5.25V Supply
o
Selectable Input Range of ±200mV or ±2V
o
Selectable Voltage Reference: Internal 2.048V or
External
o
Internal High-Accuracy Oscillator Needs No
External Components
o
Automatic Offset Calibration
o
Low Power: Maximum 980μA Operating Current
o
Small 32-Pin 7mm
7mm TQFP Package (4.5
Digits), 28-Pin SSOP Package (3.5 Digits), and 28-
Pin DIP Package (3.5 Digits)
o
Triplexed LCD Driver
o
Evaluation Kit Available (Order MAX1494EVKIT)
M
3.5- and 4.5-Digit, Single-Chip
ADCs with LCD Drivers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
TOP VIEW
MAX1493
MAX1495
TQFP
32
28
29
30
31
25
26
27
D
D
I
V
N
D
G
B
B
B
10
13
15
14
16
11
12
9
D
H
P
S
S
S
S
S
17
18
19
20
21
22
23
SEG12
24
SEG13
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
2
3
4
5
6
7
8
DPSET1
RANGE
LOWBATT
REF+
REF-
AIN-
AIN+
1
AV
DD
PART
TEMP
RANGE
PIN-
PACKAGE
RESOLUTION
(DIGITS)
MAX1491
CAI*
MAX1491CNI
MAX1493
CCJ
MAX1495
CCJ*
0
°
C to +70
°
C 28 SSOP
0
°
C to +70
°
C 28 DIP
0
°
C to +70
°
C 32 TQFP
0
°
C to +70
°
C 32 TQFP
3.5
3.5
4.5
4.5
Pin Configurations
Ordering Information
19-3053; Rev 0; 10/03
Pin Configurations continued at end of data sheet.
EVALUATION KIT
AVAILABLE
*
Future product—contact factory for availability.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1495CCJ | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
| MAX1493CCJ | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
| MAX1492CAI | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
| MAX1492CNI | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
| MAX1494CCJ | 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1491CNI+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 3.5 Digit ADC w/LCD 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX14920ECB+ | 功能描述:電池管理 12/16Cell Measurement AFE RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX14920ECB+T | 功能描述:電池管理 12/16Cell Measurement AFE RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX14921ECS+ | 功能描述:電池管理 16Cell Measurement AFE RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX14921ECS+T | 功能描述:電池管理 16Cell Measurement AFE RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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