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參數(shù)資料
| 型號： | MAX152EAP+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 8BIT 1UA PWR-DWN 20-SSOP |
| 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)： | 8 |
| 采樣率（每秒）： | 400k |
| 數(shù)據(jù)接口： | 并聯(lián) |
| 轉(zhuǎn)換器數(shù)目： | 3 |
| 功率耗散（最大）： | 640mW |
| 電壓電源： | 雙 ± |
| 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(yīng)商設(shè)備封裝： | 20-SSOP |
| 包裝： | 帶卷 (TR) |
| 輸入數(shù)目和類型： | 1 個(gè)單端，單極；1 個(gè)單端，雙極 |
MAX152
+3V, 8-Bit ADC with 1A Power-Down
6
_______________________________________________________________________________________
PIN
NAME
FUNCTION
1
VIN
2
D0
Three-State Data Output (LSB)
3-5
D1-D3
Three-State Data Outputs
6
WR/RDY
7
MODE
8
RD
9
INT
10
GND
Ground
11
VREF-
12
VREF+
13
CS
14-16
D4-D6
Three-State Data Outputs
17
D7
Three-State Data Output (MSB)
18
PWRDN
19
VSS
20
VDD
Positive Supply, +3V.
Analog Input. Range is
VREF-
≤ VIN ≤ VREF+.
Write Control Input/Ready Status
Output*
Mode Selection Input is internally
pulled low with a 15A current source.
MODE = 0 activates read mode
MODE = 1 activates write-read mode*
Read Input must be low to access
data.*
Interrupt Output goes low to indicate
end of conversion.*
Lower limit of reference span. Sets the
zero-code voltage. Range is
VSS ≤ VREF- < VREF+.
Upper limit to reference span. Sets the
full-scale input voltage. Range is
VREF- < VREF+
≤ VDD.
Chip-Select Input must be low for the
device recognize
WR or RD inputs.
Powerdown Input reduces supply
current when low.
Negative Supply. Unipolar: VSS = 0V,
Bipolar: VSS = -3V.
____________________Pin Description
_______________Detailed Description
Converter Operation
The MAX152 uses a half-flash conversion technique
(see
Functional Diagram) in which two 4-bit flash ADC
sections achieve an 8-bit result. Using 15 compara-
tors, the flash ADC compares the unknown input volt-
age to the reference ladder and provides the upper 4
data bits.
An internal digital-to-analog converter (DAC) uses the
4 most significant bits (MSBs) to generate the analog
result from the first flash conversion and a residue volt-
age that is the difference between the unknown input
and the DAC voltage. The residue is then compared
again with the flash comparators to obtain the lower 4
data bits (LSBs).
The MAX152 is characterized for operation between
+3.0V and +3.6V. Conversion times decrease as the
supply voltage increases. The supply current decreas-
es rapidly with decreasing supply voltage. (See
Typical Operating Characteristics.)
Power-Down Mode
In burst-mode or low sample-rate applications, the
MAX152 can be shut down between conversions,
reducing supply current to microamp levels (see
Typical Operating Characteristics). A logic low on the
PWRDN pin shuts the device down, reducing supply
current to typically 1A when powered from a single 3V
supply.
A logic high on
PWRDN wakes up the
MAX152. A new conversion can be started within
900ns of the
PWRDN pin being driven high (this
includes both the power-up delay and the track/hold
acquisition time). If power-down mode is not required,
connect
PWRDN to VDD.
*See
Digital Inferface Section.
DATA
OUTPUTS
DATA
OUTPUTS
CL
3k
CL
A. HIGH-Z TO VOH
B. HIGH-Z TO VOL
3k
VDD
Figure 1. Load Circuits for Data-Access Time Test
DATA
OUTPUTS
10pF
3k
10pF
A. VOH TO HIGH-Z
B. VOL TO HIGH-Z
3k
VDD
DATA
OUTPUTS
Figure 2. Load Circuits for Data-Hold TIme Test
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| MAX152EPP | 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX152EPP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 400ksps 3V 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX152EVKIT-DIP | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 MAX152 Eval Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| MAX152EWP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX152EWP+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 400ksps 3V 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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