SPECIFICATIONS1 VDD
參數(shù)資料
型號: AD7940BRMZ
廠商: Analog Devices Inc
文件頁數(shù): 14/20頁
文件大?。?/td> 0K
描述: IC ADC 14BIT UNIPOLAR 8-MSOP
標(biāo)準(zhǔn)包裝: 50
位數(shù): 14
采樣率(每秒): 100k
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): 26.4mW
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-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-MSOP
包裝: 管件
輸入數(shù)目和類型: 1 個單端,單極
AD7940
Rev. A | Page 3 of 20
SPECIFICATIONS1
VDD = 2.50 V to 5.5 V, fSCLK = 2.5 MHz, fSAMPLE = 100 kSPS, unless otherwise noted; TA = TMIN to TMAX, unless otherwise noted.
Table 2.
Parameter
B Version1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
f
IN = 10 kHz sine wave
Signal-to-Noise + Distortion (SINAD)2
81
dB min
Total Harmonic Distortion (THD)2
98
dB typ
Peak Harmonic or Spurious Noise (SFDR)2
95
dB typ
Intermodulation Distortion (IMD)2
Second-Order Terms
94
dB typ
Third-Order Terms
100
dB typ
Aperture Delay
20
ns max
Aperture Jitter
30
ps typ
Full Power Bandwidth
7
MHz typ
@ 3 dB
2
MHz typ
@ 0.1 dB
DC ACCURACY
Resolution
14
Bits min
V
DD = 2.5 V to 4.096 V
13
Bits min
V
DD > 4.096 V
Integral Nonlinearity2
±1
LSB max
V
DD = 2.5 V to 4.096 V
±2
LSB max
V
DD > 4.096 V
Offset Error2
±6
LSB max
Gain Error2
±8
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to V
DD
V
DC Leakage Current
±0.3
A max
Input Capacitance
30
pF typ
LOGIC INPUTS
Input High Voltage, V
INH
2.4
V min
Input Low Voltage, V
INL
0.4
V max
V
DD = 3 V
0.8
V max
V
DD = 5 V
Input Current, I
IN
±0.3
A max
Typically 10 nA, V
IN = 0 V or VDD
Input Capacitance, C
IN
10
pF max
LOGIC OUTPUTS
Output High Voltage, V
OH
V
DD – 0.2
V min
I
SOURCE = 200 A; VDD = 2.50 V to 5.25 V
Output Low Voltage, V
OL
0.4
V max
I
SINK = 200 A
Floating-State Leakage Current
±0.3
A max
Floating-State Output Capacitance2, 3
10
pF max
Output Coding
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
8
s max
16 SCLK cycles
Track-and-Hold Acquisition Time
500
ns max
Full-scale step input
400
ns max
Sine wave input ≤ 10 kHz
Throughput Rate
100
kSPS max
POWER REQUIREMENTS
V
DD
2.50/5.5
V min/V max
I
DD
Digital I/P
S = 0 V or VDD
Normal Mode (Static)
5.2
mA max
V
DD = 5.5 V; SCLK on or off
2
mA max
V
DD = 3.6 V; SCLK on or off
Normal Mode (Operational)
4.8
mA max
V
DD = 5.5 V; fSAMPLE = 100 kSPS; 3.3 mA typ
1.9
mA max
V
DD = 3.6 V; fSAMPLE = 100 kSPS; 1.29 mA typ
Full Power-Down Mode
0.5
A max
SCLK on or off. V
DD = 5.5 V
0.3
A max
SCLK on or off. V
DD = 3.6 V
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