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參數(shù)資料
| 型號(hào)： | ADS-929MC |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | ADC |
| 中文描述： | 1-CH 14-BIT FLASH METHOD ADC, PARALLEL ACCESS, CDIP24 |
| 封裝： | METAL SEALED, CERAMIC, DDIP-24 |
| 文件頁(yè)數(shù)： | 3/8頁(yè) |
| 文件大?。?/td> | 639K |
| 代理商： | ADS-929MC |
TECHNICAL NOTES
1. Obtaining fully specified performance from the ADS-919 requires care-
ful attention to pc-card layout and power supply decoupling. The device's
analog and digital ground systems are connected to each other internally.
For optimal performance, tie all ground pins (14, 19 and 23) directly to a
large
analog
ground plane beneath the package.
ANALOG OUTPUT
Internal Reference
Voltage
Drift
External Current
+25°C
TYP.
0 to +70°C
TYP.
–55 to +125°C
TYP.
MIN.
MAX.
MIN.
MAX.
MIN.
MAX.
UNITS
+9.95
—
—
+10.0
±5
—
+10.05
—
1.5
+9.95
—
—
+10.0
±5
—
+10.05
—
1.5
+9.95
—
—
+10.0
±5
—
+10.05
—
1.5
Volts
ppm/°C
mA
DIGITAL OUTPUTS
Logic Levels
Logic "1"
Logic "0"
Logic Loading "1"
Logic Loading "0"
Delay, Falling Edge of EOC to
Output Data Valid
Output Coding
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
+2.4
—
—
—
—
—
—
—
—
+0.4
–4
+4
Volts
Volts
mA
mA
—
—
35
—
—
35
—
—
35
ns
Straight Binary
POWER REQUIREMENTS , ±15V
Power Supply Ranges
+15V Supply
–15V Supply
+5V Supply
Power Supply Currents
+15V Supply
–15V Supply
+5V Supply
Power Dissipation
Power Supply Rejection
+14.5
–14.5
+4.75
+15.0
–15.0
+5.0
+15.5
–15.5
+5.25
+14.5
–14.5
+4.75
+15.0
–15.0
+5.0
+15.5
–15.5
+5.25
+14.5
–14.5
+4.75
+15.0
–15.0
+5.0
+15.5
–15.5
+5.25
Volts
Volts
Volts
—
—
—
—
—
+45
–45
+85
1.8
—
+60
–60
+95
2.2
±0.02
—
—
—
—
—
+45
–45
+85
1.8
—
+60
–60
+95
2.2
±0.02
—
—
—
—
—
+45
–45
+85
1.8
—
+60
–60
+95
2.2
±0.02
mA
mA
mA
Watts
%FSR/%V
POWER REQUIREMENTS, ±12V
Power Supply Ranges
+12V Supply
–12V Supply
+5V Supply
Power Supply Currents
+12V Supply
–12V Supply
+5V Supply
Power Dissipation
Power Supply Rejection
+11.5
–11.5
+4.75
+12.0
–12.0
+5.0
+12.5
–12.5
+5.25
+11.5
–11.5
+4.75
+12.0
–12.0
+5.0
+12.5
–12.5
+5.25
+11.5
–11.5
+4.75
+12.0
–12.0
+5.0
+12.5
–12.5
+5.25
Volts
Volts
Volts
—
—
—
—
—
+45
–45
+85
1.5
—
+65
–60
+95
1.7
±0.02
—
—
—
—
—
+45
–45
+85
1.5
—
+65
–60
+95
1.7
±0.02
—
—
—
—
—
+45
–45
+85
1.5
—
+65
–60
+95
1.7
±0.02
mA
mA
mA
Watts
%FSR/%V
Footnotes:
All power supplies must be on before applying a start convert pulse. All supplies and
the clock (START CONVERT) must be present during warmup periods. The device
must be continuously converting during this time. There is a slight degradation in
performance when using ±12V supplies.
See Ordering Information for availability of ±5V input range. Contact DATEL for
availability of other input voltage ranges.
A 2MHz clock with a 200ns wide start convert pulse is used for all production testing.
See Timing Diagram for more details.
This is the time required before the A/D output data is valid once the analog input is
back within the specified range.
(SNR + Distortion) – 1.76 + 20 log
Full Scale Amplitude
Actual Input Amplitude
6.02
Effective bits is equal to:
Bypass all power supplies and the REFERENCE OUTPUT (pin 21) to ground
with 4.7μF tantalum capacitors in parallel with 0.1μF ceramic capacitors.
Locate the bypass capacitors as close to the unit as possible. If the user-
installed offset and gain adjusting circuit shown in Figure 2 is used, also
locate it as close to the ADS-919 as possible.
2. The ADS-919 achieves its specified accuracies without the need for exter-
nal calibration. If required, the device's small initial offset and gain errors
can be reduced to zero using the input circuit of Figure 2. When using this
circuit, or any similar offset and gain-calibration hardware, make adjust-
ments following warmup. To avoid interaction, always adjust offset before
gain.
3. When operating the ADS-919 from ±12V supplies, do not drive external
circuitry with the REFERENCE OUTPUT. The reference's accuracy and drift
specifications may not be met, and loading the circuit may cause accuracy
errors within the converter.
4. Applying a start convert pulse while a conversion is in progress (EOC =
logic "1") initiates a new and inaccurate conversion cycle. Data from the
interrupted and subsequent conversions will be invalid.
ADS-919
14-Bit, 2MHz, Low-Power Sampling A/D Converters
DATEL
11 Cabot Boulevard, Mansfield, MA 02048-1151 USA Tel: (508) 339-3000 www.datel.com e-mail: help@datel.com
01 Apr 2011 MDA_ADS-919.B02
Page 3 of 8
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| ADS930E | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 8-Bit 30 MSPS SE/ Diff Input 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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