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參數(shù)資料
| 型號(hào)： | AD7450BRZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/22頁 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT DIFF IN 1MSPS 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 98 |
| 位數(shù)： | 12 |
| 采樣率（每秒）： | 1M |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 功率耗散（最大）： | 9.25mW |
| 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： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 輸入數(shù)目和類型： | 1 個(gè)差分，單極 |
| 配用： | EVAL-AD7450CBZ-ND - BOARD EVALUATION FOR AD7450 |
AD7450
–3–
Parameter
Conditions/Comments
A Version
B Version
Unit
CONVERSION RATE
Conversion Time
888 ns with an 18 MHz SCLK
16
SCLK Cycles
1.07
s with a 15 MHz SCLK
Track-and-Hold
Sine Wave Input
200
ns max
Acquisition Time
3, 8
Throughput Rate
9
VDD = 5 V
1
MSPS max
VDD = 3 V
833
kSPS max
POWER REQUIREMENTS
VDD
Range: 3 V
± 10%; 5 V ± 5%
3/5
V min/max
IDD
10, 11
Normal Mode (Static)
VDD = 3 V/5 V SCLK; ON or OFF
0.5
mA typ
Normal Mode (Operational)
VDD = 5 V; fSAMPLE = 1 MSPS
1.8
mA max
VDD = 3 V; fSAMPLE = 833 kSPS
1.25
mA max
Full Power-Down Mode
SCLK ON or OFF
1
A max
Power Dissipation
Normal Mode (Operational)
VDD = 5 V; fSAMPLE = 1 MSPS;
9
mW max
1.38 mW typ for 100 KSPS
10
VDD = 3 V; fSAMPLE = 833 kSPS;
3.75
mW max
0.53 mW typ for 100 KSPS
10
Full Power-Down Mode
VDD = 5 V; SCLK ON or OFF
5
W max
VDD = 3 V; SCLK ON or OFF
3
W max
NOTES
1Temperature range is as follows: A and B Versions: –40
°C to +85°C.
2Common-mode voltage. The input signal can be centered on any choice of dc common-mode voltage as long as this value is in the range specified in Figures 8 and 9.
3See Terminology section.
4A 200 mV p-p sine wave, varying in frequency from 1 kHz to 200 kHz is coupled onto V
DD. A 2.2 nF capacitor is used to decouple VDD to GND.
5If the input spans of V
IN+ and VIN– are both VREF, and they are 180
° out of phase, the differential voltage is 2
VREF.
6The AD7450 is functional with a reference input from 100 mV and for V
DD = 5 V, the reference can range up to 3.5 V (see References section).
7The AD7450 is functional with a reference input from 100 mV and for V
DD = 3 V, the reference can range up to 2.2 V (see References section).
8Sample tested @ 25
°C to ensure compliance.
9See Serial Interface section.
10See Power Versus Throughput Rate section.
11Measured with a midscale dc input.
Rev. A
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