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AD7472BRU 데이터시트(PDF) 3 Page - Analog Devices

부품명 AD7472BRU
상세설명  1.75 MSPS, 4 mW 10-Bit-12-Bit Parallel ADCs
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REV. B
–3–
AD7470/AD7472
AD7472–SPECIFICATIONS1 (V
DD = 2.7 V to 5.25 V
2, REF IN = 2.5 V, A and B Versions: f
CLKIN = 26 MHz @ 5 V and
20 MHz @ 3 V, TA = TMIN to TMAX, unless otherwise noted.)
Parameter
A Version
1
B Version
1
Unit
Test Conditions/Comments
DYNAMIC PERFORMANCE
5 V
3 V
5 V3 V
fS = 1.5 MSPS @ 5 V, fS = 1.2 MSPS @ 3 V
Signal to Noise + Distortion (SINAD) 69
69
69
69
dB typ
fIN = 500 kHz Sine Wave
68
68
68
68
dB min
fIN = 100 kHz Sine Wave
Signal-to-Noise Ratio (SNR)
70
70
70
70
dB typ
fIN = 500 kHz Sine Wave
68
68
68
68
dB min
fIN = 100 kHz Sine Wave
Total Harmonic Distortion (THD)
–83
–78
–83
–78
dB typ
fIN = 500 kHz Sine Wave
–83
–84
–83
–84
dB typ
fIN = 100 kHz Sine Wave
–75
–75
–75
–75
dB max
fIN = 100 kHz Sine Wave
Peak Harmonic or Spurious Noise
(SFDR)
–86
–81
–86
–81
dB typ
fIN = 500 kHz Sine Wave
–86
–86
–86
–86
dB typ
fIN = 100 kHz Sine Wave
–76
–76
–76
–76
dB max
fIN = 100 kHz Sine Wave
Intermodulation Distortion (IMD)
Second-Order Terms
–77
–77
–77
–77
dB typ
fIN = 500 kHz Sine Wave
–86
–86
–86
–86
dB typ
fIN = 100 kHz Sine Wave
Third-Order Terms
–77
–77
–77
–77
dB typ
fIN = 500 kHz Sine Wave
–86
–86
–86
–86
dB typ
fIN = 100 kHz Sine Wave
Aperture Delay
5
5
5
5
ns typ
Aperture Jitter
15
15
15
15
ps typ
Full Power Bandwidth
20
20
20
20
MHz typ
@ 3 dB
DC ACCURACY
fS = 1.5 MSPS @ 5 V, fS = 1.2 MSPS @ 3 V
Resolution
12
12
12
12
Bits
Integral Nonlinearity
± 2
± 2
± 1
±1
LSB max
Guaranteed No Missed Codes to 11 Bits
(A Version)
Differential Nonlinearity
± 1.8
± 1.8
± 0.9
±0.9
LSB max
Guaranteed No Missed Codes to 12 Bits
(B Version)
Offset Error
± 10
± 10
± 10
±10
LSB max
Gain Error
± 2
± 2
± 2
±2
LSB max
ANALOG INPUT
Input Voltage Ranges
0 to REF IN 0 to REF IN
0 to REF IN 0 to REF IN
V
DC Leakage Current
± 1
± 1
± 1
±1
µA max
Input Capacitance
33
33
33
33
pF typ
REFERENCE INPUT
REF IN Input Voltage Range
2.5
2.5
2.5
2.5
V
±1% for Specified Performance
DC Leakage Current
±1
±1
±1
±1
µA max
Input Capacitance
10/20
10/20
10/20
10/20
pF typ
Track-and-Hold Mode
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
2.4
2.4
V min
Input Low Voltage, VINL
0.4
0.4
0.4
0.4
V max
Input Current, IIN
±1
±1
±1
±1
µA max
Typically 10 nA, VIN = 0 V or VDD
Input Capacitance, CIN
3
10
10
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDRIVE – 0.2
VDRIVE – 0.2
VDRIVE – 0.2
VDRIVE – 0.2
V min
ISOURCE = 200
µA
Output Low Voltage, VOL
0.4
0.4
0.4
0.4
V max
ISINK = 200
µA
Floating-State Leakage Current
± 10
± 10
± 10
±10
µA max
VDD = 2.7 V to 5.25 V
Floating-State Output Capacitance
10
10
10
10
pF max
Output Coding
Straight (Natural) Binary
Straight (Natural) Binary
CONVERSION RATE
Conversion Time
14
14
14
14
CLK IN
Cycles (max)
Track-and-Hold Acquisition Time
135
135
135
135
ns min
Throughput Rate
1.5
1.2
1.5
1.2
MSPS max
Conversion Time + Acquisition Time
POWER REQUIREMENTS
VDD
+2.7/+5.25
+2.7/+5.25
V min/max
IDD
4
Digital Inputs = 0 V or DVDD
Normal Mode
2.4
2.4
mA max
VDD = 4.75 V to 5.25 V; Typ 2 mA; fS = 1.5 MSPS
Quiescent Current
900
900
µA max
VDD = 4.75 V to 5.25 V; fS = 1.5 MSPS
Normal Mode
1.5
1.5
mA max
VDD = 2.7 V to 3.3 V; Typ 1.3 mA; fS = 1.2 MSPS
Quiescent Current
800
800
µA max
VDD = 2.7 V to 3.3 V; fS = 1.2 MSPS
Sleep Mode
1
1
µA max
CLK IN = 0 V or DVDD
Power Dissipation
4
Digital Inputs = 0 V or DVDD
Normal Mode
12
12
mW max
VDD = 5 V
4.5
4.5
mW max
VDD = 3 V
Sleep Mode
5
5
µW max
VDD = 5 V; CLK IN = 0 V or DVDD
33
µW max
VDD = 3 V; CLK IN = 0 V or DVDD
NOTES
1Temperature ranges as follows: A and B Versions: –40
°C to +85°C.
2The AD7472 functionally works at 2.35 V. Typical specifications @ 25
°C for SNR (100 kHz) = 68 dB; THD (100 kHz) = –84 dB; INL ± 0.8 LSB.
3Sample tested @ 25
°C to ensure compliance.
4See Power vs. Throughput Rate section.
Specifications subject to change without notice.


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