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參數(shù)資料
| 型號(hào)： | MAX1498ECJ |
| 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 LED Drivers |
| 中文描述： | 1-CH PROPRIETARY METHOD ADC, PQFP32 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, MO-136, TQFP-32 |
| 文件頁(yè)數(shù)： | 5/24頁(yè) |
| 文件大?。?/td> | 907K |
| 代理商： | MAX1498ECJ |
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M
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
_______________________________________________________________________________________
5
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
LED DRIVERS
(Table 5)
LED Supply Voltage
LED Shutdown Supply Current
V
LED
I
SHDN
2.70
5.25
10
V
μA
LED driver shutdown mode
LED Supply Current
I
LED
Seven segments and decimal point on,
R
ISET
= 25k
MAX1447/MAX1498
MAX1496
176
180
mA
512
640
25
0.178
Display Scan Rate
f
OSC
Hz
Segment Current Slew Rate
DIG_ Voltage Low
I
SEG
/
t
V
DIG
mA/μs
V
I
DIG_
= 176mA
0.300
Segment Drive Source Current
Matching
I
SEG
3
±10
%
Segment Drive Source Current
Interdigit Blanking Time
I
SEG
V
LED
- V
SEG
= 0.6V, R
ISET
= 25k
16.0
21.5
4
25.5
mA
μs
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= V
DD
= +2.7V to +5.25V, GND = 0, V
LED
= +2.7V to +5.25V, GLED = 0, V
REF+
- V
REF-
= 2.048V (external reference),
C
REF+
= C
REF-
= 0.1μF, C
VNEG
= 0.1μF. Internal clock mode, unless otherwise noted. All specifications are at T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C, unless otherwise noted.)
Note 1:
Integral nonlinearity is the deviation of the analog value at any code from its theoretical value after nulling the gain error and
offset error.
Note 2:
Offset calibrated.
Note 3:
Offset nulled.
Note 4:
Drift error is eliminated by recalibration at the new temperature.
Note 5:
The input voltage range for the analog inputs is given with respect to the voltage on the negative input of the differential pair.
Note 6:
V
AIN
+ or V
AIN
- = -2.2V to +2.2V. V
REF
+ or V
REF
- = -2.2V to +2.2V. All input structures are identical. Production tested on
AIN+ and REF+ only.
Note 7:
Power-supply currents are measured with all digital inputs at either GND or DV
DD
.
Note 8:
Measured at DC by changing the power-supply voltage from 2.7V to 5.25V and measuring the effect on the conversion
error with external reference. PSRR at 50Hz and 60Hz exceeds 120dB with filter notches at 50Hz and 60Hz (Figure 2).
Note 9:
LED drivers are disabled.
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| MAX1498ECJ+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5 Digit 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1498ECJ+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 4.5 Digit 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1498ECJ-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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX14998ETO+ | 功能描述:模擬開關(guān) IC 4Ch DisplayPort MUX RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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