- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9507 > MAX192BEWP+ (Maxim Integrated Products)IC ADC 10BIT SERIAL 20-SOIC PDF資料下載
參數(shù)資料
| 型號： | MAX192BEWP+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 10BIT SERIAL 20-SOIC |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 36 |
| 類型： | 數(shù)據(jù)采集系統(tǒng)（DAS），ADC |
| 分辨率（位）： | 10 b |
| 采樣率（每秒）： | 133k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 電壓電源： | 單電源 |
| 電源電壓： | ±5V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應商設(shè)備封裝： | 20-SOIC W |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1393 (CN2011-ZH PDF) |
MAX192
Low-Power, 8-Channel,
Serial 10-Bit ADC
_______________________________________________________________________________________
7
INPUT
SHIFT
REGISTER
CONTROL
LOGIC
INT
CLOCK
OUTPUT
SHIFT
REGISTER
+2.46V
REFERENCE
T/H
ANALOG
INPUT
MUX
SAR
ADC
IN
DOUT
SSTRB
VDD
DGND
SCLK
DIN
CH0
CH1
CH3
CH2
CH7
CH6
CH5
CH4
AGND
REFADJ
VREF
OUT
REF
CLOCK
+4.096V
20k
≈ 1.65
1
2
3
4
5
6
7
8
10
11
12
13
15
16
17
18
19
CS
SHDN
A
20
14
AGND
9
MAX192
Figure 3. Block Diagram
Detailed Description
The MAX192 uses a successive-approximation conver-
sion technique and input track/hold (T/H) circuitry to
convert an analog signal to a 10-bit digital output. A
flexible serial interface provides easy interface to
microprocessors. No external hold capacitors are
required. Figure 3 shows the block diagram for the
MAX192.
Pseudo-Differential Input
The sampling architecture of the ADC’s analog com-
parator is illustrated in the Equivalent Input Circuit
(Figure 4). In single-ended mode, IN+ is internally
switched to CH0–CH7 and IN- is switched to AGND. In
differential mode, IN+ and IN- are selected from pairs
of CH0/CH1, CH2/CH3, CH4/CH5, and CH6/CH7. Refer
to Tables 1 and 2 to configure the channels.
In differential mode, IN- and IN+ are internally switched
to either one of the analog inputs. This configuration is
pseudo-differential to the effect that only the signal at
IN+ is sampled. The return side (IN-) must remain sta-
ble within ±0.5LSB (±0.1LSB for best results) with
respect to AGND during a conversion. Accomplish this
by connecting a 0.1F capacitor from AIN- (the select-
ed analog input, respectively) to AGND.
During the acquisition interval, the channel selected as
the positive input (IN+) charges capacitor CHOLD. The
acquisition interval spans three SCLK cycles and ends
on the falling SCLK edge after the last bit of the input
control word has been entered. At the end of the acqui-
sition interval, the T/H switch opens, retaining charge
on CHOLD as a sample of the signal at IN+.
The conversion interval begins with the input multiplex-
er switching CHOLD from the positive input (IN+) to the
negative input (IN-). In single-ended mode, IN- is
simply AGND. This unbalances node ZERO at the input
of the comparator. The capacitive DAC adjusts during
the remainder of the conversion cycle to restore its
node ZERO to 0V within the limits of its resolution. This
action is equivalent to transferring a charge of
16pF x (VIN+ - VIN-) from CHOLD to the binary-weighted
capacitive DAC, which in turn forms a digital represen-
tation of the analog input signal.
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
AGND
CSWITCH
TRACK
T/H
SWITCH
10k
RS
CHOLD
HOLD
CAPACITIVE DAC
VREF
ZERO
COMPARATOR
–
+
16pF
SINGLE-ENDED MODE: IN+ = CHO-CH7, IN- = AGND.
DIFFERENTIAL MODE (BIPOLAR): IN+ AND IN- SELECTED FROM PAIRS OF
CH0/CH1, CH2/CH3, CH4/CH5, CH6/CH7.
AT THE SAMPLING INSTANT,
THE MUX INPUT SWITCHES
FROM THE SELECTED IN+
CHANNEL TO THE SELECTED
IN- CHANNEL.
INPUT
MUX
Figure 4. Equivalent Input Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27473P18F35S | CONN PLUG 66POS STRAIGHT W/SCKT |
| MS3102E18-17P | CONN RCPT 7POS BOX MNT W/PINS |
| MAX186DCWP+ | IC DAS 8CH 12BIT T/H LP 20-SOIC |
| M83723/78W1407N | CONN PLUG 7POS STRAIGHT W/PINS |
| MAX186DCPP+ | IC DAS 8CH 12BIT T/H LP 20-DIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX192BEWP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 8Ch 133ksps 5V Precision 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX192BEWP+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 8Ch 133ksps 5V Precision 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX192BEWP-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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX192BMJP | 制造商:Maxim Integrated Products 功能描述:LOW-POWER, 8-CHANNEL, SERIAL 10-BIT ADC - Rail/Tube |
| MAX192BMWP/PR | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
發(fā)布緊急采購，3分鐘左右您將得到回復。