- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9936 > MAX149AEAP+T (Maxim Integrated Products)IC ADC 10BIT SERIAL 20-SSOP PDF資料下載
參數(shù)資料
| 型號： | MAX149AEAP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 11/23頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 10BIT SERIAL 20-SSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,000 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 133k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 640mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 20-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 8 個單端，單極；8 個單端，雙極；4 個差分，單極；4 個差分，雙極 |
+2.7V to +5.25V, Low-Power, 8-Channel,
Serial 10-Bit ADCs
MAX148/MAX149
19
deliver up to 350FA DC load current and have 10I or
less output impedance. If the reference has a higher
output impedance or is noisy, bypass it close to the VREF
pin with a 4.7FF capacitor.
Using the REFADJ input makes buffering the external
reference unnecessary. To use the direct VREF input,
disable the internal buffer by tying REFADJ to VDD.
In power-down, the input bias current to REFADJ is
typically 25FA (MAX149) with REFADJ tied to VDD. Pull
REFADJ to AGND to minimize the input bias current in
power-down.
Transfer Function
Table 7 shows the full-scale voltage ranges for unipolar
and bipolar modes.
The external reference must have a temperature coef-
ficient of 20ppm/NC or less to achieve accuracy to within
1 LSB over the 0NC to +70NC commercial temperature
range.
Figure 17 depicts the nominal, unipolar input/output
(I/O) transfer function, and Figure 18 shows the bipolar
input/output transfer function. Code transitions occur
halfway between successive-integer LSB values. Output
coding is binary, with 1 LSB = 2.44mV (2.500V/1024)
for unipolar operation, and 1 LSB = 2.44mV [(2.500V/2 -
-2.500V/2)/1024] for bipolar operation.
Table 7. Full Scale and Zero Scale
Figure 18. Bipolar Transfer Function, Full Scale (VFS) = VREF/2
+ VCOM, Zero Scale (ZS) = COM
Figure 19. Power-Supply Grounding Connection
UNIPOLAR MODE
BIPOLAR MODE
Full Scale
Zero Scale
Positive Full Scale
Zero Scale
Negative Full Scale
VREF + VCOM
VCOM
VREF/2 + VCOM
VCOM
- VREF/2 + VCOM
011 . . . 111
011 . . . 110
000 . . . 010
000 . . . 001
000 . . . 000
111 . . . 111
111 . . . 110
111 . . . 101
100 . . . 001
100 . . . 000
- FS
COM*
INPUT VOLTAGE (LSB)
OUTPUT CODE
ZS = COM
+FS - 1 LSB
*VCOM ≥ VREF/2
+ VCOM
VFS = VREF
2
-VFS =
+ VCOM
-VREF
2
1 LSB = VREF
1024
+3V
GND
SUPPLIES
DGND
+3V
DGND
COM
AGND
VDD
DIGITAL
CIRCUITRY
R* = 10
*OPTIONAL
MAX148
MAX149
相關PDF資料 |
PDF描述 |
|---|---|
| ICL3221EIVZ-T7A | IC TXRX RS232 SGL ESD 16TSSOP |
| VE-25J-CU-B1 | CONVERTER MOD DC/DC 36V 200W |
| ICL3221EIAZ-T7A | IC TXRX RS232 SGL ESD 16SSOP |
| VE-254-CU-B1 | CONVERTER MOD DC/DC 48V 200W |
| MS27656T11A35S | CONN RCPT 13POS WALL MNT W/SCKT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX149AEPP | 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX149AEPP+ | 功能描述:模數(shù)轉換器 - ADC 10-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX149AMJP | 功能描述:模數(shù)轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX149BCAP | 功能描述:模數(shù)轉換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX149BCAP+ | 功能描述:模數(shù)轉換器 - ADC 10-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
發(fā)布緊急采購，3分鐘左右您將得到回復。