参数资料
| 型号： | MAX1494CCJ+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 26/34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
LCD Segment-Display Register 3 (Read/Write):
MSB
LSB
PEAK
HOLD
BC_
B4
C4
A4
G4
D4
Default values: 00h
The LCD segment-display register 3 is an 8-bit
read/write register. When the SEG_SEL bit (in the con-
trol register) is set to 1, the MAX1492/MAX1494 provide
direct access to individual LCD segments. The bits in
the LCD segment-display register determine if a seg-
ment is on or off. Write a 0 to turn on a segment and a 1
to turn off a segment.
D4 :
G4 :
A4 :
C4 :
Segment d Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
Segment g Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
Segment a Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
Segment c Driver Bit of Digit 4. The
default value turns on the LCD segment
B4 :
BC_ :
HOLD :
PEAK :
Segment b Driver Bit of Digit 4. The
default value turns on the LCD segment
(MAX1494 only).
Segment bc_ Driver Bit. For the
MAX1494, this bit enables BC5. For the
MAX1492, this bit enables BC4. The
default value turns on the LCD segment.
HOLD-Sign Driver Bit. The default value
turns on the HOLD annunciator.
PEAK-Sign Driver Bit. The default value
turns on the PEAK annunciator.
(MAX1494 only).
ADC Custom Offset-Calibration Register (Read/Write):
MSB
LSB
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default values: 0000h
In addition to automatic offset calibration, the
MAX1492/MAX1494 offer a user-defined custom-offset
16-bit read/write register. The final result of the ADC
conversion is the input after autocalibration minus the
ADC Result-Register 1 (Read Only):
value in the custom offset. The custom offset value is
stored in this register. D15 is the MSB. The data is rep-
resented in two’s complement format.
MSB
LSB
(MAX1492)
LSB
(MAX1494)
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Default values: 0000h
The ADC result-register 1 is a 16-bit read-only register.
This register stores the 16 MSBs of the ADC result. The
data is represented in two’s complement format.
For the MAX1494, the data is 16-bit and D15 is the
MSB. For the MAX1492, the data is 12-bit, D15 is the
MSB, and D4 is the LSB.
26
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