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參數資料
| 型號： | AD7851AR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 14-Bit 333 kSPS Serial A/D Converter |
| 中文描述： | 1-CH 14-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO24 |
| 封裝： | MS-013AD, SOIC-24 |
| 文件頁數： | 2/36頁 |
| 文件大小： | 435K |
| 代理商： | AD7851AR |
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REV. A
–2–
AD7851–SPECIFICATIONS
1, 2
A Grade: f
CLKIN
= 7 MHz (–40
8
C to +85
8
C), f
SAMPLE
= 333kHz; K Grade: f
CLKIN
= 6 MHz
238 kHz; (AV
DD
= DV
DD
= +5.0 V
6
5%,
REF
IN
/REF
OUT
= 4.096 V External Reference; SLEEP
= Logic Hgh; T
A
= T
MN
to T
MAX
, unless otherwse noted)
Parameter
A
1
K
1
(0
8
C to +85
8
C), f
SAMPLE
= 285 kHz; A and K Grade: f
CLKIN
= 5 MHz (to +125
8
C), f
SAMPLE
=
Units
T est Conditions/Comments
DYNAMIC PERFORMANCE
Signal-to-Noise + Distortion Ratio
3
(SNR)
77
78
dB min
T ypically SNR is 79.5 dB
V
IN
= 10 kHz, Sine Wave, f
SAMPLE
= 333 kHz
V
IN
= 10 kHz, Sine Wave, f
SAMPLE
= 333 kHz,
T ypically –96 dB
V
IN
= 10 kHz, f
SAMPLE
= 333 kHz
T otal Harmonic Distortion (T HD)
–86
–86
dB max
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Second Order T erms
T hird Order T erms
Full Power Bandwidth
–87
–87
dB max
–86
–86
20
–90
–90
20
dB typ
dB typ
MHz typ
fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 333 kHz
fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 333 kHz
@ 3 dB
DC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity
Unipolar Offset Error
Positive Full-Scale Error
Negative Full-Scale Error
Bipolar Zero Error
14
±
2
±
2
±
10
±
10
±
10
±
1
14
±
1
±
1
±
10
±
10
±
10
±
1
Bits
LSB max
LSB max
LSB max
LSB max
LSB typ
LSB typ
Guaranteed No Missed Codes to 14 Bits
Review: “Adjusting the Offset Calibration
Register” in the “Calibration Registers” section
of the data sheet.
ANALOG INPUT
Input Voltage Ranges
0 V to V
REF
0 V to V
REF
Volts
i.e., AIN(+) – AIN(–) = 0 V to V
REF
, AIN(–) can be
biased up but AIN(+) cannot go below AIN(–).
i.e., AIN(+) – AIN(–) = –V
REF
/2 to +V
REF
/2, AIN(–)
should be biased up and AIN(+) can go below
AIN(–) but cannot go below 0 V.
±
V
REF
/2
±
V
REF
/2
Volts
Leakage Current
Input Capacitance
±
1
20
±
1
20
μ
A max
pF typ
REFERENCE INPUT /OUT PUT
REF
IN
Input Voltage Range
Input Impedance
REF
OUT
Output Voltage
REF
OUT
T empco
4/V
DD
150
3.696/4.496 3.696/4.496
50
4/V
DD
150
V min/max
k
typ
V min/max
ppm/
°
C typ
Functional from 1.2 V
Resistor Connected to Internal Reference Node
50
LOGIC INPUT S
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN5
V
DD
– 1.0
0.4
±
10
10
V
DD
– 1.0
0.4
±
10
10
V min
V max
μ
A max
pF max
V
IN
= 0 V or V
DD
LOGIC OUT PUT S
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
5
Output Coding
V
DD
– 0.4
0.4
±
10
10
Straight (Natural) Binary
2s Complement
V
DD
– 0.4
0.4
±
10
10
V min
V max
μ
A max
pF max
I
SOURCE
= 200
μ
A
I
SINK
= 0.8 mA
Unipolar Input Range
Bipolar Input Range
CONVERSION RAT E
Conversion T ime
Conversion + T /H Acquisition T ime
2.78
3.0
3.25
3.5
μ
s max
μ
s max
19.5 CLK IN Cycles
21 CLK IN Cycles T hroughput Rate
相關PDF資料 |
PDF描述 |
|---|---|
| AD7851ARS | 14-Bit 333 kSPS Serial A/D Converter |
| AD7851KN | 14-Bit 333 kSPS Serial A/D Converter |
| AD7851KR | 14-Bit 333 kSPS Serial A/D Converter |
| AD7853LARS | 3 V to 5 V Single Supply, 200 kSPS 12-Bit Sampling ADCs |
| AD7853L* | Single Supply V.35 Transceiver; Package: SO; No of Pins: 28; Temperature Range: -40°C to +85°C |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7851AR-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SOIC W T/R |
| AD7851ARS | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SSOP 制造商:Analog Devices 功能描述:IC 14-BIT ADC |
| AD7851ARS-REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 333ksps 14-bit Serial 24-Pin SSOP T/R |
| AD7851ARSZ | 功能描述:IC ADC 14BIT SRL 333KSPS 24SSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
| AD7851ARSZ-REEL | 功能描述:IC ADC 14BIT SRL 333KSPS 24SSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:1,000 系列:- 位數:12 采樣率（每秒）:300k 數據接口:并聯 轉換器數目:1 功率耗散（最大）:75mW 電壓電源:單電源 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:24-SOIC 包裝:帶卷 (TR) 輸入數目和類型:1 個單端，單極；1 個單端，雙極 |
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