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參數資料
| 型號： | AD7707BR |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | ADC |
| 英文描述： | 3 V/5 V, +-10 V Input Range, 1 mW 3-Channel 16-Bit, Sigma-Delta ADC |
| 中文描述： | 3-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO20 |
| 封裝： | 0.300 INCH, SOIC-20 |
| 文件頁數： | 5/40頁 |
| 文件大小： | 316K |
| 代理商： | AD7707BR |
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REV. A
AD7707
–5–
TIMING CHARACTERISTICS
1, 2
Limit at
T
MIN
, T
MAX
(B Version)
Parameter
Units
Conditions/Comments
f
CLKIN3, 4
400
5
0.4
×
t
CLKIN
0.4
×
t
CLKIN
500
×
t
CLKIN
100
kHz min
MHz max
ns min
ns min
ns nom
ns min
Master Clock Frequency: Crystal Oscillator or Externally Supplied for
Specified Performance
Master Clock Input Low Time. t
CLKIN
= 1/f
CLKIN
Master Clock Input High Time
DRDY
High Time
RESET
Pulsewidth
t
CLKIN
LO
t
CLKIN
HI
t
1
t
2
Read Operation
t
3
t
4
t
55
0
120
0
80
100
100
100
0
10
60
100
100
ns min
ns min
ns min
ns max
ns max
ns min
ns min
ns min
ns min
ns max
ns max
ns max
DRDY
to
CS
Setup Time
CS
Falling Edge to SCLK Rising Edge Setup Time
SCLK Falling Edge to Data Valid Delay
DV
DD
= +5V
DV
DD
= +3.0V
SCLK High Pulsewidth
SCLK Low Pulsewidth
CS
Rising Edge to SCLK Rising Edge Hold Time
Bus Relinquish Time after SCLK Rising Edge
DV
DD
= +5V
DV
DD
= +3.0V
SCLK Falling Edge to
DRDY
High
7
t
6
t
7
t
8
t
96
t
10
Write Operation
t
11
t
12
t
13
t
14
t
15
t
16
120
30
20
100
100
0
ns min
ns min
ns min
ns min
ns min
ns min
CS
Falling Edge to SCLK Rising Edge Setup Time
Data Valid to SCLK Rising Edge Setup Time
Data Valid to SCLK Rising Edge Hold Time
SCLK High Pulsewidth
SCLK Low Pulsewidth
CS
Rising Edge to SCLK Rising Edge Hold Time
NOTES
1
Sample tested at +25
°
C to ensure compliance. All input signals are specified with tr = tf = 5 ns (10% to 90% of DV
DD
) and timed from a voltage level of 1.6 V.
2
See Figures 16 and 17.
3
f
CLKIN
Duty Cycle range is 45% to 55%. f
CLKIN
must be supplied whenever the AD7707 is not in Standby mode. If no clock is present in this case, the device can
draw higher current than specified and possibly become uncalibrated.
4
The AD7707 is production tested with f
CLKIN
at 2.4576MHz (1MHz for some I
DD
tests). It is guaranteed by characterization to operate at 400kHz.
5
These numbers are measured with the load circuit of Figure 1 and defined as the time required for the output to cross the V
OL
or V
OH
limits.
6
These numbers are derived from the measured time taken by the data output to change 0.5V when loaded with the circuit of Figure 1. The measured number is then
extrapolated back to remove effects of charging or discharging the 50 pF capacitor. This means that the times quoted in the timing characteristics are the true bus
relinquish times of the part and as such are independent of external bus loading capacitances.
7
DRDY
returns high after the first read from the device after an output update. The same data can be read again, if required, while
DRDY
is high, although care
should be taken that subsequent reads do not occur close to the next output update.
TO OUTPUT
PIN
50pF
I
SINK
(800
m
A AT V
DD
= +5V
100
m
A AT V
DD
= +3V)
+1.6V
I
SOURCE
(200
m
A AT V
DD
= +5V
100
m
A AT V
DD
= +3V)
Figure 1. Load Circuit for Access Time and Bus Relinquish Time
(AV
DD
= DV
DD
= +2.7 V TO +5.25 V, AGND = DGND = 0 V; f
CLKIN
= 2.4576 MHz; Input
Logic = 0, Logic 1 = DV
DD
unless otherwise noted.)
相關PDF資料 |
PDF描述 |
|---|---|
| AD7707BRU | 3 V/5 V, +-10 V Input Range, 1 mW 3-Channel 16-Bit, Sigma-Delta ADC |
| AD7707 | ECONOLINE: REC2.2-S_DR/H1 - 2.2W DIP Package- 1kVDC Isolation- Regulated Output- UL94V-0 Package Material- Continuous Short Circiut Protection- Internal SMD design- 100% Burned In- Efficiency to 75% |
| AD7707EB | 3 V/5 V 610 V Input Range 1 mW 3-Channel 16-Bit Sigma-Delta ADC(316.51 k) |
| AD7708BR | Shaft; Style: 2 - light; Applicable Model: LE-P / LEL-W |
| AD7708BRU | 8-/10-Channel, Low Voltage, Low Power, ADCs |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD7707BR-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 20-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.5KSPS 16BIT SERL 20SOIC W - Tape and Reel |
| AD7707BR-REEL7 | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 20-Pin SOIC W T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.5KSPS 16BIT SERL 20SOIC W - Tape and Reel |
| AD7707BRU | 功能描述:IC ADC 16BIT 3CH 20-TSSOP RoHS:否 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 |
| AD7707BRU-REEL | 制造商:Analog Devices 功能描述:ADC Single Delta-Sigma 500sps 16-bit Serial 20-Pin TSSOP T/R 制造商:Analog Devices 功能描述:ADC SGL DELTA-SIGMA 0.5KSPS 16BIT SERL 20TSSOP - Tape and Reel |
| AD7707BRU-REEL7 | 功能描述:IC ADC 16BIT 3CH 20-TSSOP T/R RoHS:否 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:16 采樣率（每秒）:45k 數據接口:串行 轉換器數目:2 功率耗散（最大）:315mW 電壓電源:模擬和數字 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) 輸入數目和類型:2 個單端，單極 |
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