AD7894 Analog Devices, AD7894 Datasheet - Page 2

• Manufacturer Part Number: AD7894
• Manufacturer: Analog Devices

Specifications of AD7894

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 200kSPS
• Interface: Ser
• Analog Input Type: SE-Bip,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 4,Bip 10V,Bip 2.5V,Uni (Vref),Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: SOIC

Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE INPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION RATE
SAMPLE AND HOLD
AD7894–SPECIFICATIONS
Signal to (Noise + Distortion) Ratio
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Resolution
Minimum Resolution for Which
Relative Accuracy
Differential Nonlinearity
AD7894-2
AD7894-10, AD7894-3 Only
AD7894-10
AD7894-3
AD7894-2
REF IN Input Voltage Range
Input Current
Input Capacitance
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
Output Coding
AD7894-10, AD7894-3
AD7894-2
Conversion Time
Mode 1 Operation
Mode 2 Operation
Track/Hold Acquisition Time
–3 dB Small Signal Bandwidth
Aperture Jitter
@ +25 C
T
2nd Order Terms
3rd Order Terms
No Missing Codes Are Guaranteed
Positive Gain Error
Unipolar Offset Error
Positive Gain Error
Negative Gain Error
Bipolar Zero Error
Input Voltage Range
Input Current
Input Voltage Range
Input Current
Input Voltage Range
Input Current
MIN
to T
MAX
IN
3
4
5
IN
3
3
INL
INH
3
4
OL
OH
3
2
3
3
3
3
3
A Versions
78
77
–86
–92
–92
–92
14
14
–1 to +1.5
2
1.5
0 to +2.5
500
2.375/2.625
1
10
2.4
0.8
10
4.0
0.4
Straight (Natural) Binary
5
10
0.35
7.5
50
2
12
8
8
8
10
10
2.5
10
Twos Complement
l
(V
otherwise noted.)
DD
= +5 V
B Versions
78
77
–86
–92
–92
–92
14
14
–1 to +1.5
2
1.5
0 to +2.5
500
2.375/2.625 V min/V max
1
10
2.4
0.8
10
4.0
0.4
5
10
0.35
7.5
50
1.5
10
6
6
6
8
10
2.5
10
–2–
5%, GND = 0 V, REF IN = +2.5 V. All specifications T
1
Units
dB min
dB min
dB max
dB typ
dB typ
dB typ
Bits
Bits
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
LSB max
V
mA max
V
mA max
V
nA max
pF max
V min
V max
pF max
V min
V max
MHz typ
ps typ
A max
A max
s max
s max
s max
Test Conditions/Comments
f
See Figure 14
f
Typically –87 dB. See Figure 15
f
fa = 9 kHz, fb = 9.5 kHz, f
See Analog Input Section
See Analog Input Section
2.5 V
V
V
V
I
I
IN
IN
IN
SOURCE
SINK
DD
DD
IN
= 70 kHz Sine Wave, f
= 10 kHz Sine Wave, f
= 10 kHz Sine Wave, f
= 0 V to V
= 5 V
= 5 V
= 1.6 mA
= 400 A
5%
5%
5%
DD
SAMPLE
SAMPLE
SAMPLE
SAMPLE
MIN
to T
= 160 kHz
= 160 kHz,
= 160 kHz
= 160 kHz
MAX
unless
REV. 0