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參數(shù)資料
| 型號： | MAX11057ECB+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/25頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 14BIT PAR 250KSPS 64TQFP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 160 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 250k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉換器數(shù)目： | 4 |
| 功率耗散（最大）： | 3.48W |
| 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： | 64-TQFP 裸露焊盤 |
| 供應商設備封裝： | 64-TQFP-EP（10x10） |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 4 個單端，單極 |
MAX11047–MAX11049/MAX11057–MAX11059
4-/6-/8-Channel, 16-/14-Bit,
Simultaneous-Sampling ADCs
16
______________________________________________________________________________________
Figures 2 and 3 illustrate the clamp circuit voltage-cur-
rent characteristics for a source impedance RS =
1280
. While the input voltage is within the -300mV to
+(VAVDD + 300mV) range, no current flows in the input
clamps. Once the input voltage goes beyond this volt-
age range, the clamps turn on and limit the voltage at
the input pin.
Applications Information
Digital Interface
The bidirectional, parallel, digital interface, CR0–CR3,
sets the 4-bit configuration register. This interface
configures the following control signals: chip select
(CS), read (RD), write (WR), end of conversion (EOC),
and convert start (CONVST). Figures 6 and 7 and the
Timing Characteristics in the
Electrical Characteristics
table show the operation of the interface.
DB0–DB15/13, output the 16-/14-bit conversion result.
All bits are high impedance when RD = 1 or CS = 1.
CR3 (Int/Ext Reference)
CR3 selects the internal or external reference. The POR
default = 0.
0 = internal reference, REFIO internally driven through a
10k
resistor, bypass with 0.1F capacitor to AGND.
1 = external reference, drive REFIO with a high quality
reference.
CR2 (Output Data Format)
CR2 selects the output data format. The POR default = 0.
0 = offset binary.
1 = two’s complement.
CR1 (Reserved)
CR1 must be set to 0.
CR0 (CONVST Mode)
CR0 selects the acquisition mode. The POR default = 0.
0 = CONVST controls the acquisition and conversion.
Drive CONVST low to start acquisition. The rising edge
of CONVST begins the conversion.
1 = acquisition mode starts as soon as previous con-
version is complete. The rising edge of CONVST begins
the conversion.
Programming the Configuration Register
To program the configuration register, bring the CS and
WR low and apply the required configuration data on
CR3–CR0 of the bus and then raise WR once to save
changes.
CAUTION: The host driving CR3–CR0 must relin-
quish the bus when the conversion results of the
ADC are being read.
Starting a Conversion
CONVST initiates conversions. The devices provide two
acquisition modes set through the configuration regis-
ter. Allow a quiet time (tQ) of 500ns prior to the start of
conversion to avoid any noise interference during read-
out or write operations from corrupting a sample.
CR3
CR2
CR1
CR0
Int/Ext
Reference
Output
Data Format
Must be set
to 0
CONVST
Mode
Table 1. Configuration Register
SIGNAL VOLTAGE AT SOURCE AND CH_ INPUT (V)
I CLAMP
(mA)
30
20
0
10
-10
-20
-15
-10
-5
0
5
10
15
20
25
-25
-30
40
RS = 1170
I
VAVDD = 5.0V
AT SOURCE
AT CH_ INPUT
Figure 2. Input Clamp Characteristics
SIGNAL VOLTAGE AT SOURCE AND CH_ INPUT (V)
6
4
2
0
-2
-4
8
I CLAMP
(mA)
-20
-15
-10
-5
10
15
20
25
-25
0
5
RS = 1170
I
VAVDD = 5.0V
AT CH_ INPUT
AT SOURCE
Figure 3. Input Clamp Characteristics (Zoom In)
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參數(shù)描述 |
|---|---|
| MAX11057ECB+ | 功能描述:模數(shù)轉換器 - ADC 14Bit 4Ch Simult Sampling 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 |
| MAX11057ECB+T | 功能描述:模數(shù)轉換器 - ADC 14Bit 4Ch Simult Sampling 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 |
| MAX11058ECB+ | 功能描述:模數(shù)轉換器 - ADC 14Bit 6Ch Simult Sampling 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 |
| MAX11058ECB+T | 功能描述:模數(shù)轉換器 - ADC 14Bit 6Ch Simult Sampling 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 |
| MAX11059ECB+ | 功能描述:模數(shù)轉換器 - ADC 14Bit 8Ch Simult Sampling 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 |
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