參數(shù)資料
型號(hào)： ADS7844E
元件分類： 通用總線功能
英文描述： CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-SO -55 to 125
中文描述： 12位，8通道串行輸出采樣模擬到數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 2/14頁(yè)
文件大?。?/td> 204K
代理商： ADS7844E
2
ADS7844
SPECIFICATION: +5V
At T
A
= –40
°
C to +85
°
C, +V
CC
= +5V, V
REF
= +5V, f
SAMPLE
= 200kHz, and f
CLK
= 16 f
SAMPLE
= 3.2MHz, unless otherwise noted.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
ADS7844E, N
ADS7844EB, NB
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
ANALOG INPUT
Full-Scale Input Span
Absolute Input Range
Positive Input - Negative Input
Positive Input
Negative Input
0
V
REF
6
6
6
6
6
6
V
V
V
pF
μ
A
–0.2
–0.2
+V
+1.25
Capacitance
Leakage Current
25
±
1
6
6
SYSTEM PERFORMANCE
Resolution
No Missing Codes
Integral Linearity Error
Differential Linearity Error
Offset Error
Offset Error Match
Gain Error
Gain Error Match
Noise
Power Supply Rejection
12
6
Bits
Bits
LSB
(1)
LSB
LSB
LSB
LSB
LSB
μ
Vrms
dB
12
6
±
2
±
1
±
1
6
6
±
3
6
±
0.8
±
0.5
±
3
1.0
±
4
1.0
0.15
6
0.1
30
70
6
6
6
SAMPLING DYNAMICS
Conversion Time
Acquisition Time
Throughput Rate
Multiplexer Settling Time
Aperture Delay
Aperture Jitter
12
6
Clk Cycles
Clk Cycles
kHz
ns
ns
ps
3
6
200
6
500
30
100
6
6
6
DYNAMIC CHARACTERISTICS
Total Harmonic Distortion
(2)
Signal-to-(Noise + Distortion)
Spurious Free Dynamic Range
Channel-to-Channel Isolation
V
IN
= 5Vp-p at 10kHz
V
IN
= 5Vp-p at 10kHz
V
IN
= 5Vp-p at 10kHz
V
IN
= 5Vp-p at 50kHz
–76
71
76
120
–78
72
78
6
dB
dB
dB
dB
REFERENCE INPUT
Range
Resistance
Input Current
0.1
+V
CC
6
6
V
DCLK Static
5
45
2.5
0.001
6
6
6
6
G
μ
A
μ
A
μ
A
100
6
f
SAMPLE
= 12.5kHz
3
6
DIGITAL INPUT/OUTPUT
Logic Family
Logic Levels
V
IH
V
IL
V
OH
V
Data Format
CMOS
6
| I
IH
|
≤
+5
μ
A
| I
IL
|
≤
+5
μ
A
I
OH
= –250
μ
A
I
OL
= 250
μ
A
3.0
–0.3
3.5
5.5
+0.8
6
6
6
6
6
V
V
V
V
0.4
6
Straight Binary
6
POWER SUPPLY REQUIREMENTS
+V
Quiescent Current
Specified Performance
4.75
5.25
900
6
6
6
V
μ
A
μ
A
μ
A
mW
550
300
f
= 12.5kHz
Power-Down Mode
(3)
, CS = +V
CC
6
3
6
6
Power Dissipation
4.5
TEMPERATURE RANGE
Specified Performance
–40
+85
6
6
°
C
6
Same specifications as ADS7844E, ADS7844N.
NOTE: (1) LSB means Least Significant Bit. With V
REF
equal to +5.0V, one LSB is 1.22mV. (2) First five harmonics of the test frequency. (3) Auto power-down mode
(PD1 = PD0 = 0) active or SHDN = GND.
相關(guān)PDF資料
PDF描述
ADS7844EB CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-SO -55 to 125
ADS7844N 12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
ADS7844NB CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-TSSOP -55 to 125
ADS7845 CMOS 8-Stage Presettable 8-Bit Binary Synchronous Down Counter 16-TSSOP -55 to 125
ADS7845E TOUCH SCREEN CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7844E/2K5 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8-Ch Serial Output Sampling 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
ADS7844E/2K5G4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8-Ch Serial Output Sampling 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
ADS7844EB 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8-Ch Serial Output Sampling 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
ADS7844EB/2K5 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8-Ch Serial Output Sampling 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
ADS7844EB/2K5G4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 8-Ch Serial Output Sampling 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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