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參數(shù)資料
| 型號(hào)： | MAX1447ECJ+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 20/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 4 1/2DIG W/LED DVR 32TQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 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(yīng)商設(shè)備封裝： | 32-TQFP（5x5） |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個(gè)差分，雙極 |
MAX1447/MAX1496/MAX1498
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
VLED
2.70
5.25
V
LED Shutdown Supply Current
ISHDN
LED driver shutdown mode
10
A
LED Supply Current
ILED
Seven segments and decimal point on,
RISET = 25k
176
180
mA
MAX1447/MAX1498
512
Display Scan Rate
fOSC
MAX1496
640
Hz
Segment Current Slew Rate
ISEG/t
25
mA/s
DIG_ Voltage Low
VDIG
IDIG_ = 176mA
0.178
0.300
V
Segment Drive Source Current
Matching
ISEG
3
±10
%
Segment Drive Source Current
ISEG
VLED - VSEG = 0.6V, RISET = 25k
16.0
21.5
25.5
mA
Interdigit Blanking Time
4s
ELECTRICAL CHARACTERISTICS (continued)
(AVDD = DVDD = VDD = +2.7V to +5.25V, GND = 0, VLED = +2.7V to +5.25V, GLED = 0, VREF+ - VREF- = 2.048V (external reference),
CREF+ = CREF- = 0.1F, CVNEG = 0.1F. Internal clock mode, unless otherwise noted. All specifications are at TA = TMIN to TMAX.
Typical values are at TA = +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: VAIN+ or VAIN- = -2.2V to +2.2V. VREF+ or VREF- = -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 DVDD.
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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