參數(shù)資料
型號(hào)： ADS7844N
英文描述： 12-Bit, 8-Channel Serial Output Sampling ANALOG-TO-DIGITAL CONVERTER
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)： 3/14頁(yè)
文件大?。?/td> 204K
代理商： ADS7844N
3
ADS7844
SPECIFICATION: +2.7V
At T
A
= –40
°
C to +85
°
C, +V
CC
= +2.7V, V
REF
= +2.5V, f
SAMPLE
= 125kHz, and f
CLK
= 16 f
SAMPLE
= 2MHz, unless otherwise noted.
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
CC
+0.2
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
125
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
= 2.5Vp-p at 10kHz
V
IN
= 2.5Vp-p at 10kHz
V
IN
= 2.5Vp-p at 10kHz
V
IN
= 2.5Vp-p at 50kHz
–75
71
78
100
–77
72
80
6
dB
dB
dB
dB
REFERENCE INPUT
Range
Resistance
Input Current
0.1
+V
CC
6
6
V
DCLK Static
5
13
2.5
0.001
6
6
6
6
G
μ
A
μ
A
μ
A
40
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
OL
= 250
μ
A
+V
CC
0.7
–0.3
+V
CC
0.8
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
2.7
3.6
650
6
6
6
V
μ
A
μ
A
μ
A
mW
280
220
6
6
f
= 12.5kHz
Power-Down Mode
(3)
, CS = +V
CC
3
6
6
Power Dissipation
1.8
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 +2.5V, one LSB is 610mV. (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
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
ADS7846IGQCR TOUCH-SCREEN CONTROLLER
ADS7846IRGVR TOUCH-SCREEN CONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS7844N/1K 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
ADS7844N/1KG4 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
ADS7844NB 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
ADS7844NB 制造商:Texas Instruments 功能描述:A/D CONVERTER (A-D) IC ((NW)) 制造商:Texas Instruments 功能描述:IC, ADC, 12BIT, 200KSPS, SSOP-20
ADS7844NB/1K 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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