AD7924–SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
Signal to Noise + Distortion (SINAD)
2
Signal to Noise Ratio (SNR)
2
Total Harmonic Distortion (THD)
2
Peak Harmonic or Spurious Noise
(SFDR)
2
Intermodulation Distortion (IMD)
2
Second Order Terms
Third Order Terms
Aperture Delay
Aperture Jitter
Channel-to-Channel Isolation
2
Full Power Bandwidth
DC ACCURACY
2
Resolution
Integral Nonlinearity
Differential Nonlinearity
0 V to REF
IN
Input Range
Offset Error
Offset Error Match
Gain Error
Gain Error Match
0 V to 2
×
REF
IN
Input Range
Positive Gain Error
Positive Gain Error Match
Zero Code Error
Zero Code Error Match
Negative Gain Error
Negative Gain Error Match
ANALOG INPUT
Input Voltage Range
DC Leakage Current
Input Capacitance
REFERENCE INPUT
REF
IN
Input Voltage
DC Leakage Current
REF
IN
Input Impedance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN3
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
3
Output Coding
(AV
DD
= V
DRIVE
= 2.7 V to 5.25 V, REF
IN
= 2.5 V, f
SCLK
= 20 MHz, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.)
B Version
1
70
69
70
–77
–73
–78
–76
–90
–90
10
50
–85
8.2
1.6
12
±
1
–0.9/+1.5
±
8
±
0.5
±
1.5
±
0.5
±
1.5
±
0.5
±
8
±
0.5
±
1
±
0.5
0 to REF
IN
0 to 2
×
REF
IN
±
1
20
2.5
±
1
36
0.7
×
V
DRIVE
0.3
×
V
DRIVE
±
1
10
Unit
dB min
dB min
dB min
dB max
dB max
dB max
dB max
dB typ
dB typ
ns typ
ps typ
dB typ
MHz typ
MHz typ
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
V
V
µA
max
pF typ
V
µA
max
kΩ typ
V min
V max
µA
max
pF max
Test Conditions/Comments
f
IN
= 50 kHz Sine Wave, f
SCLK
= 20 MHz
@5V
@ 3 V Typically 69.5 dB
@ 5 V Typically –84 dB
@ 3 V Typically –77 dB
@ 5 V Typically –86 dB
@ 3 V Typically –80 dB
fa = 40.1 kHz, fb = 41.5 kHz
f
IN
= 400 kHz
@ 3 dB
@ 0.1 dB
Guaranteed No Missed Codes to 12 Bits
Straight Binary Output Coding
Typically
±
0.5 LSB
–REF
IN
to +REF
IN
Biased about REF
IN
with
Twos Complement Output Coding
Typically
±
0.8 LSB
RANGE Bit Set to 1
RANGE Bit Set to 0, V
DD
/V
DRIVE
= 4.75 V to 5.25 V
±
1% Specified Performance
f
SAMPLE
= 1 MSPS
Typically 10 nA, V
IN
= 0 V or V
DRIVE
V
DRIVE
– 0.2
V min
0.4
V max
±
1
µA
max
10
pF max
Straight (Natural) Binary
Twos Complement
I
SOURCE
= 200
µA,
V
DD
= 2.7 V to 5.25 V
I
SINK
= 200
µA
Coding Bit Set to 1
Coding Bit Set to 0
–6–
REV. 0