參數資料
| 型號： | AD9280ARS |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 23/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC CMOS 8BIT 32MSPS 28-SSOP |
| 產品變化通告： | AD9280 Pin Configuration Description Change 21/Apr/2010 Product Discontinuance 27/Oct/2011 |
| 標準包裝： | 47 |
| 位數： | 8 |
| 采樣率（每秒）： | 32M |
| 數據接口： | 并聯(lián) |
| 轉換器數目： | 1 |
| 功率耗散（最大）： | 110mW |
| 電壓電源： | 單電源 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 28-SSOP（0.209"，5.30mm 寬） |
| 供應商設備封裝： | 28-SSOP |
| 包裝： | 管件 |
| 輸入數目和類型： | 1 個單端，單極 |
AD9280
–8–
Table I. Mode Selection
Input
MODE
REFSENSE
Modes
Connect
Span
Pin
REF
REFTS
REFBS
Figure
TOP/BOTTOM
AIN
1 V
AVDD
Short REFSENSE, REFTS and VREF Together
AGND
18
AIN
2 V
AVDD
AGND
Short REFTS and VREF Together
AGND
19
CENTER SPAN
AIN
1 V
AVDD/2
Short VREF and REFSENSE Together
AVDD/2
20
AIN
2 V
AVDD/2
AGND
No Connect
AVDD/2
Differential
AIN Is Input 1
1 V
AVDD/2
Short VREF and REFSENSE Together
AVDD/2
29
REFTS and
REFBS Are
Shorted Together
for Input 2
2 V
AVDD/2
AGND
No Connect
AVDD/2
External Ref
AIN
2 V max AVDD
AVDD
No Connect
Span = REFTS
21, 22
– REFBS (2 V max)
AGND
Short to
23
VREFTF
VREFBF
AD876-8
AIN
2 V
Float or
AVDD
No Connect
Short to
30
AVSS
VREFTF
VREFBF
0
–9
1.0E+6
1.0E+9
1.0E+7
SIGNAL
AMPLITUDE
–
dB
1.0E+8
–3
–6
FREQUENCY – Hz
–12
–15
–18
–21
–24
Figure 13. Full Power Bandwidth
50
40
–50
0
3.0
1.0
2.0
30
20
–10
–20
–30
INPUT VOLTAGE – V
10
0
–40
2.5
0.5
1.5
I B
–
A
REFBS = 0.5V
REFTS = 2.5V
CLOCK = 32MHz
Figure 14. Input Bias Current vs. Input Voltage
APPLYING THE AD9280
THEORY OF OPERATION
The AD9280 implements a pipelined multistage architecture to
achieve high sample rate with low power. The AD9280 distrib-
utes the conversion over several smaller A/D subblocks, refining
the conversion with progressively higher accuracy as it passes
the results from stage to stage. As a consequence of the distrib-
uted conversion, the AD9280 requires a small fraction of the
256 comparators used in a traditional flash type A/D. A sample-
and-hold function within each of the stages permits the first
stage to operate on a new input sample while the second, third
and fourth stages operate on the three preceding samples.
OPERATIONAL MODES
The AD9280 is designed to allow optimal performance in a
wide variety of imaging, communications and instrumentation
applications, including pin compatibility with the AD876-8 A/D.
To realize this flexibility, internal switches on the AD9280 are
used to reconfigure the circuit into different modes. These modes
are selected by appropriate pin strapping. There are three parts
of the circuit affected by this modality: the voltage reference, the
reference buffer, and the analog input. The nature of the appli-
cation will determine which mode is appropriate: the descrip-
tions in the following sections, as well as Table I should assist in
selecting the desired mode.
REV. E
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| AD9280ARSRL | 功能描述:IC ADC 8BIT CMOS 32MSPS 28-SSOP RoHS:否 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 位數:12 采樣率（每秒）:3M 數據接口:- 轉換器數目:- 功率耗散（最大）:- 電壓電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應商設備封裝:SOT-23-6 包裝:帶卷 (TR) 輸入數目和類型:- |
| AD9280ARSZ | 功能描述:IC ADC CMOS 8BIT 32MSPS 28-SSOP 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 系列:microPOWER™ 位數:8 采樣率（每秒）:1M 數據接口:串行，SPI? 轉換器數目:1 功率耗散（最大）:- 電壓電源:模擬和數字 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:24-VFQFN 裸露焊盤 供應商設備封裝:24-VQFN 裸露焊盤（4x4） 包裝:Digi-Reel® 輸入數目和類型:8 個單端，單極 產品目錄頁面:892 (CN2011-ZH PDF) 其它名稱:296-25851-6 |
| AD9280ARSZRL | 功能描述:IC ADC 8BIT CMOS 32MSPS 28SSOP RoHS:是 類別:集成電路 (IC) >> 數據采集 - 模數轉換器 系列:- 標準包裝:2,500 系列:- 位數:16 采樣率（每秒）:15 數據接口:MICROWIRE?，串行，SPI? 轉換器數目:1 功率耗散（最大）:480µW 電壓電源:單電源 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-WFQFN 裸露焊盤 供應商設備封裝:38-QFN（5x7） 包裝:帶卷 (TR) 輸入數目和類型:16 個單端，雙極；8 個差分，雙極 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
| AD9280-EB | 制造商:Analog Devices 功能描述:EVAL BD FOR AD9280 - Bulk |
| AD9280JRS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog-to-Digital Converter， 8-Bit |
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