
Parameter
A Version
1
B Version
1
S Version
1
Units
Test Conditions/Comments
DYNAMIC PERFORMANCE
Signal to Noise + Distortion Ratio
3
(SNR)
70
71
70
dB min
Typically SNR is 72 dB
V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz
(L Version: f
SAMPLE
= 100 kHz @ f
CLKIN
= 2 MHz)
V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz
(L Version: f
SAMPLE
= 100 kHz @ f
CLKIN
= 2 MHz)
V
IN
= 10 kHz Sine Wave, f
SAMPLE
= 200 kHz
(L Version: f
SAMPLE
= 100 kHz @ f
CLKIN
= 2 MHz)
Total Harmonic Distortion (THD)
–78
–78
–78
dB max
Peak Harmonic or Spurious Noise
–78
–78
–78
dB max
Intermodulation Distortion (IMD)
Second Order Terms
–78
–78
–78
dB typ
fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 200 kHz
(L Version: f
SAMPLE
= 100 kHz @ f
CLKIN
= 2 MHz)
fa = 9.983 kHz, fb = 10.05 kHz, f
SAMPLE
= 200 kHz
(L Version: f
SAMPLE
= 100 kHz @ f
CLKIN
= 2 MHz)
Third Order Terms
–78
–78
–78
dB typ
DC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity
Unipolar Offset Error
12
±
1
±
1
±
3
±
2
±
4
±
2
±
4
±
2
±
4
±
2
±
4
12
±
0.5
±
1
±
3
±
2
±
4
±
2
±
4
±
2
±
4
±
2
±
4
12
±
1
±
1
±
4
±
2
±
4
±
2
±
5
±
2
±
5
±
2
±
5
Bits
LSB max
LSB max
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
LSB typ
LSB max
5 V Reference V
DD
= 5 V
Guaranteed No Missed Codes to 12 Bits
Unipolar Gain Error
Bipolar Positive Full-Scale Error
Negative Full-Scale Error
Bipolar Zero Error
ANALOG INPUT
Input Voltage Ranges
0 to V
REF
0 to V
REF
0 to V
REF
Volts
i.e., AIN(+) – AIN(–) = 0 to V
REF
, AIN(–) can be
biased up but AIN(+) cannot go below AIN(–).
i.e., AIN(+) – AIN(–) = –V
REF
/2 to +V
REF
/2, AIN(–)
should be biased to +V
REF
/2 and AIN(+) can go below
AIN(–) but cannot go below 0 V.
±
V
REF
/2
±
V
REF
/2
±
V
REF
/2
Volts
Leakage Current
Input Capacitance
±
1
20
±
1
20
±
1
20
μ
A max
pF typ
REFERENCE INPUT/OUTPUT
REF
IN
Input Voltage Range
Input Impedance
REF
OUT
Output Voltage
REF
OUT
Tempco
2.3/V
DD
150
2.3/2.75
20
2.3/V
DD
150
2.3/2.7
20
2.3/V
DD
150
2.3/2.7
20
V min/max
k
typ
V min/max
ppm/
°
C typ
Functional from 1.2 V
LOGIC INPUTS
Input High Voltage, V
INH
3
2.1
0.4
0.6
±
10
10
3
2.1
0.4
0.6
±
10
10
3
2.1
0.4
0.6
±
10
10
V min
V min
V max
V max
μ
A max
pF max
AV
DD
= DV
DD
= 4.5 V to 5.5 V
AV
DD
= DV
DD
= 3.0 V to 3.6 V
AV
DD
= DV
DD
= 4.5 V to 5.5 V
AV
DD
= DV
DD
= 3.0 V to 3.6 V
Typically 10 nA, V
IN
= 0 V or V
DD
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN4
LOGIC OUTPUTS
Output High Voltage, V
OH
I
SOURCE
= 200
μ
A
AV
DD
= DV
DD
= 4.5 V to 5.5 V
AV
DD
= DV
DD
= 3.0 V to 3.6 V
4
2.4
4
2.4
4
2.4
V min
V min
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
4
Output Coding
0.4
±
10
10
0.4
±
10
10
0.4
±
10
10
V max
μ
A max
pF max
I
SINK
= 0.8 mA
Straight (Natural) Binary
Twos Complement
Unipolar Input Range
Bipolar Input Range
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
t
CLKIN
×
18
(L Versions Only, 0
°
C to +70
°
C, 1.8 MHz CLKIN)
(L Versions Only, –40
°
C to +85
°
C, 1 MHz CLKIN)
4.6 (10)
0.5 (1)
4.6 (9)
0.5 (1)
4.6 (9)
0.5 (1)
μ
s max
μ
s min
AD7854/AD7854L–SPECIFICATIONS
1, 2
External Reference, f
CLKIN
= 4 MHz (for L Version: 1.8 MHz (0 C to +70 C) and 1 MHz (–40 C to +85 C)); f
SAMPLE
= 200 kHz (AD7854), 100 kHz
(AD7854L); T
A
= T
MIN
to T
MAX
, unless otherwise noted.) Specifications in () apply to the AD7854L.
(AV
DD
= DV
DD
= +3.0 V to +5.5 V, REF
IN
/REF
OUT
= 2.5 V
–2–
REV. B