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AD7450BRZ Datasheet(PDF) 2 Page - Analog Devices

Part # AD7450BRZ
Description  Differential Input, 1 MSPS 12-Bit ADC in SOIC-8 and SO-8
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7450BRZ Datasheet(HTML) 2 Page - Analog Devices

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–2–
AD7450–SPECIFICATIONS1
Parameter
Conditions/Comments
A Version
B Version
Unit
DYNAMIC PERFORMANCE
Signal-to-(Noise + Distortion) Ratio
VDD = 5 V
70
70
dB min
(SINAD)
3
VDD = 3 V
68
68
dB min
Total Harmonic Distortion (THD)
3
VDD = 5 V, –80 dB typ
–75
–75
dB max
VDD = 3 V, –78 dB typ
–73
–73
dB max
Peak Harmonic or Spurious Noise
3
VDD = 5 V, –82 dB typ
–75
–75
dB max
VDD = 3 V, –80 dB typ
–73
–73
dB max
Intermodulation Distortion (IMD)
3
Second Order Terms
–85
–85
dB typ
Third Order Terms
–85
–85
dB typ
Aperture Delay
3
10
10
ns typ
Aperture Jitter
3
50
50
ps typ
Full Power Bandwidth
3
@ –3 dB
20
20
MHz typ
@ –0.1 dB
2.5
2.5
MHz typ
Power Supply Rejection Ratio
(PSRR)
3, 4
–87
–87
dB typ
DC ACCURACY
Resolution
12
12
Bits
Integral Nonlinearity (INL)
3
±2
±1
LSB max
Differential Nonlinearity (DNL)
3
Guaranteed No Missed
Codes to 12 Bits
–1/+2
±1
LSB max
Zero Code Error
3
VDD = 5 V
±3
±3
LSB max
VDD = 3 V
±6
±6
LSB max
Positive Gain Error
3
VDD = 5 V
±3
±3
LSB max
VDD = 3 V
±6
±6
LSB max
Negative Gain Error
3
VDD = 5 V
±3
±3
LSB max
VDD = 3 V
±6
±6
LSB max
ANALOG INPUT
Full-Scale Input Span
2
VREF
5
VIN+ – VIN–
VIN+ – VIN–
V
Absolute Input Voltage
VIN+
VCM
2 = V
REF
VCM
± V
REF/2
VCM
± V
REF/2
V
VIN–
VCM
2 = V
REF
VCM
± VREF/2
VCM
± VREF/2
V
DC Leakage Current
±1
±1
µA max
Input Capacitance
When in Track
20
20
pF typ
When in Hold
6
6
pF typ
REFERENCE INPUT
VREF Input Voltage
5 V supply (
±1% tolerance for
specified performance)
2.5
6
2.5
6
V
3 V supply (
±1% tolerance for
specified performance)
1.25
7
1.25
7
V
DC Leakage Current
±1
±1
µA max
VREF Input Capacitance
15
15
pF typ
LOGIC INPUTS
Input High Voltage, VINH
2.4
2.4
V min
Input Low Voltage, VINL
0.8
0.8
V max
Input Current, IIN
Typically 10 nA, VIN = 0 V or VDD
±1
±1
µA max
Input Capacitance, CIN
8
10
10
pF max
LOGIC OUTPUTS
Output High Voltage, VOH
VDD = 5 V, ISOURCE = 200
µA
2.8
2.8
V min
VDD = 3 V, ISOURCE = 200
µA
2.4
2.4
V min
Output Low Voltage, VOL
ISINK = 200
µA
0.4
0.4
V max
Floating-State Leakage Current
±1
±1
µA max
Floating-State Output Capacitance
8
10
10
pF max
Output Coding
Two’s
Two’s
Complement
Complement
(VDD = 2.7 V to 3.3 V, fSCLK = 15 MHz, fS = 833 kSPS, VREF = 1.25 V, FIN = 200 kHz;
VDD = 4.75 V to 5.25 V, fSCLK = 18 MHz, fS = 1 MSPS, VREF = 2.5 V, FIN = 300 kHz; VCM
2 = V
REF; TA = TMIN to TMAX, unless otherwise noted.)
Rev. A


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