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參數(shù)資料
| 型號： | MAX1086ETA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/15頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 10BIT 150KSPS 8-TDFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 位數(shù)： | 10 |
| 采樣率（每秒）： | 150k |
| 數(shù)據(jù)接口： | MICROWIRE?，QSPI?，串行，SPI? |
| 轉換器數(shù)目： | 1 |
| 功率耗散（最大）： | 1.6mW |
| 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： | 8-WDFN 裸露焊盤 |
| 供應商設備封裝： | 8-TDFN-EP（3x3） |
| 包裝： | 標準包裝 |
| 輸入數(shù)目和類型： | 1 個差分，單極；1 個差分，雙極 |
| 產品目錄頁面： | 1395 (CN2011-ZH PDF) |
| 其它名稱： | MAX1086ETA+TDKR |
MAX1086–MAX1089
150ksps, 10-Bit, 2-Channel Single-Ended, and
1-Channel True-Differential ADCs in SOT23 and TDFN
_______________________________________________________________________________________
7
Detailed Description
The MAX1086–MAX1089 analog-to-digital converters
(ADCs) use a successive-approximation conversion (SAR)
technique and an on-chip track-and-hold (T/H) structure to
convert an analog signal into a 10-bit digital result.
The serial interface provides easy interfacing to micro-
processors (Ps). Figure 3 shows the simplified internal
structure for the MAX1086/MAX1087 (2–channels, sin-
gle-ended) and the MAX1088/MAX1089 (1–channel,
true-differential).
True-Differential Analog Input Track/Hold
The equivalent circuit of Figure 4 shows the
MAX1086–MAX1089’s input architecture which is com-
posed of a T/H, input multiplexer, comparator, and
switched-capacitor DAC. The T/H enters its tracking
mode on the rising edge of CNVST. The positive input
capacitor is connected to AIN1 or AIN2 (MAX1086/
MAX1087) or AIN+ (MAX1088/MAX1089). The negative
input capacitor is connected to GND (MAX1086/
MAX1087) or AIN- (MAX1088/MAX1089). The T/H enters
its hold mode on the falling edge of CNVST and the dif-
ference between the sampled positive and negative
input voltages is converted. The time required for the T/H
to acquire an input signal is determined by how quickly
its input capacitance is charged. If the input signal’s
source impedance is high, the acquisition time length-
ens, and CNVST must be held high for a longer period of
time. The acquisition time, tACQ, is the maximum time
needed for the signal to be acquired, plus the power-up
time. It is calculated by the following equation:
tACQ = 7 x (RS + RIN) x 24pF + tPWR
Pin Description
NAME
PIN
MAX1086
MAX1087
MAX1088
MAX1089
FUNCTION
1VDD
VDD
Positive Supply Voltage. +2.7V to +3.6V (MAX1087/MAX1089); +4.75V to +5.25V
(MAX1086/MAX1088). Bypass with a 0.1F capacitor to GND.
2
AIN1
AIN+
Analog Input Channel 1 (MAX1086/MAX1087) or Positive Analog Input (MAX1088/MAX1089)
3
AIN2
AIN-
Analog Input Channel 2 (MAX1086/MAX1087) or Negative Analog Input (MAX1088/MAX1089)
4
GND
Ground
5
REF
External Reference Voltage Input. Sets the analog voltage range. Bypass with a 0.1F
capacitor to GND.
6
CNVST
Conversion Start. A rising edge powers-up the IC and places it in track mode. At the falling
edge of CNVST, the device enters hold mode and begins conversion. CNVST also selects the
input channel (MAX1086/MAX1087) or input polarity (MAX1088/MAX1089).
7
DOUT
Serial Data Output. DOUT transitions the falling edge of SCLK. DOUT goes low at the start of a
conversion and presents the MSB at the completion of a conversion. DOUT goes high-
impedance once data has been fully clocked out.
8
SCLK
Serial Clock Input. Clocks out data at DOUT MSB first.
—
EP
—
Exposed Pad (TDFN only). Connect the exposed pad to ground or leave unconnected.
10-BIT
SAR
ADC
CONTROL
OSCILLATOR
INPUT SHIFT
REGISTER
T/H
REF
CNVST
SCLK
DOUT
AIN2
(AIN-)
AIN1
(AIN+)
MAX1086–MAX1089
( ) ARE FOR MAX1088/MAX1089
Figure 3. Simplified Functional Diagram
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1086EVKIT | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit and Evaluation System for the MAX1286/MAX1288/MAX1086/MAX1088 |
| MAX1087 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:150ksps.10-Bit.2-Channel Single-Ended.and 1-Channel True-Differential ADCs in SOT23 |
| MAX1087EKA | 制造商:Maxim Integrated Products 功能描述:- Cut Tape Product |
| MAX1087EKA-T | 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 |
| MAX1087ETA | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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