参数资料
| 型号： | MAX1494CCJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 2/34页 |
| 文件大小： | 0K |
| 描述： | IC ADC W/LCD DRIVER 32-TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 显示器类型： | LCD |
| 配置： | 7 段 + 2 个信号器 |
| 接口： | 串行 |
| 数字或字符： | A/D，4.5 位数字 |
| 电流 - 电源： | 960µA |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-LQFP（7x7） |
| 包装： | 带卷 (TR) |
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3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
ABSOLUTE MAXIMUM RATINGS
AVDD to GND...........................................................-0.3V to +6V
DVDD to GND...........................................................-0.3V to +6V
AIN+, AIN- to GND ...............................V NEG to +(AVDD + 0.3V)
REF+, REF- to GND ..............................V NEG to +(AVDD + 0.3V)
LOWBATT to GND...................................-0.3V to (AVDD + 0.3V)
CLK, EOC , CS , DIN, SCLK, DOUT to
GND ....................................................-0.3V to (DVDD + 0.3V)
SEG_ and BP_ to GND............................-0.3V to (DVDD + 0.3V)
V NEG to GND...........................................-2.6V to (AVDD + 0.3V)
Continuous Power Dissipation (T A = +70°C)
28-Pin SSOP (derate 14.9mW/°C above +70°C) ....1192.3mW
28-Pin PDIP (derate 14.3mW/°C above +70°C)......1142.9mW
32-Pin LQFP (derate 20.7mW/°C above +70°C).....1652.9mW
Operating Temperature Range...............................0°C to +70°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
V DISP to GND ..........................................-0.3V to (DVDD + 0.3V)
Maximum Current into Any Pin ...........................................50mA
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V AVDD = V DVDD = 2.7V to 5.25V, V GND = 0V, V REF+ - V REF- = 2.048V (external reference). Internal clock mode, unless otherwise noted.
All specifications are at T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY
Noise-Free Resolution
MAX1494
MAX1492
-19,999
-1999
+19,999
+1999
Count
Integral Nonlinearity (Note 1)
Range Change Accuracy
Rollover Error (See the Definitions
Section)
Output Noise
INL
2.000V range
200mV range
(V AIN+ - V AIN- = 0.100V) on 200mV range,
(V AIN+ - V AIN- = 0.100V) on 2.0V range
V AIN+ - V AIN- = full scale,
V AIN- - V AIN+ = full scale
±1
±1
10:1
±1
10
Count
Ratio
Count
μV P-P
Offset Error (Zero Input Reading)
Gain Error
Offset Drift (Zero-Reading Drift)
Offset
V IN = 0V (Note 2)
(Note 3)
V IN = 0V (Note 4)
-0
-0.5
0.1
0
+0.5
Reading
%FSR
μV/ ° C
Gain Drift
INPUT CONVERSION RATE
External-Clock Frequency
±1
4.915
ppm/ ° C
MHz
External-Clock Duty Cycle
Conversion Rate
Internal clock
External clock, f CLK = 4.915MHz
40
5
5
60
%
Hz
ANALOG INPUTS (AIN+, AIN-, bypass to GND with 0.1μF or greater capacitors)
AIN Input-Voltage Range
(Note 5)
AIN Absolute Input Voltage to
GND
RANGE bit = 0, ±2V
RANGE bit = 1, ±200mV
-2.0
-0.2
-2.2
+2.0
+0.2
+2.2
V
V
2
_______________________________________________________________________________________
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