AD7872 AD [Analog Devices], AD7872 Datasheet - Page 2

• Manufacturer Part Number: AD7872
• Description: LC2MOS Complete 14-Bit, Sampling ADCs
• Manufacturer: AD [Analog Devices]

Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
ANALOG INPUT
REFERENCE OUTPUT
LOGIC INPUTS
LOGIC OUTPUTS
CONVERSION TIME
POWER REQUIREMENTS
NOTES
1
2
3
4
5
Specifications subject to change without notice.
AD7871/AD7872–SPECIFICATIONS
Temperature ranges are as follows: J, K versions, 0 C to +70 C; A, B versions, –40 C to +85 C; T version; –55 C to +125 C.
V
SNR calculation includes distortion and noise components.
Measured with respect to internal reference.
Sample tested @ +25 C to ensure compliance.
Signal-to-Noise Ratio
Total Harmonic Distortion (THD)
Peak Harmonic or Spurious Noise
Intermodulation Distortion (IMD)
Track/Hold Acquisition Time
Resolution
Minimum Resolution for Which
Integral Nonlinearity @ +25 C
Integral Nonlinearity
Bipolar Zero Error
Positive Gain Error
Negative Gain Error
Input Voltage Range
Input Current
REF OUT @ +25 C
REF OUT Tempco
Reference Load Sensitivity
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Current (14/8/CLK Input Only)
Input Capacitance, C
Output High Voltage, V
Output Low Voltage, V
DB13 – DB0
External Clock
Internal Clock
V
V
I
I
Power Dissipation
IN
DD
SS
T
Second Order Terms
Third Order Terms
No Missing Codes Are Guaranteed
T
( REF OUT/ I)
Floating-State Leakage Current
Floating-State Output Capacitance
DD
SS
= 3 V.
MIN
MIN
to T
to T
MAX
MAX
IN
4
4
3
IN
INL
(SNR) @ +25 C
INH
5
OL
OH
2
5
J, A
Versions
80
80
–86
–86
–86
–86
2
14
14
2.99/3.01
2.98/3.02
2.4
0.8
10
4.0
0.4
10
15
10
10.5
+5
–5
13
6
95
12
12
12
3
500
1.2
10
10
1
K
Version
80
80
–88
–88
–88
–88
2
14
14
2.99/3.01 2.99/3.01
2.98/3.02 2.98/3.02
2.4
0.8
10
4.0
0.4
10
15
10
10.5
+5
–5
13
6
95
1/2
1
12
12
12
3
500
40
1.2
10
10
1
T, B
Versions
79
79
–85
–85
–85
–85
2
14
14
2.4
0.8
10
4.0
0.4
10
15
10
11
+5
–5
13
6
95
1/2
1
12
12
12
3
500
40
1.2
10
10
–2–
(V
O V, f
noted.) All Specifications T
1
DD
dB max
dB max
dB max
Units
dB min
dB min
dB typ
dB typ
dB max
dB typ
dB typ
Bits
Bits
LSB typ
LSB max
LSB max
LSB max
LSB max
Volts
V min/V max
V min/V max
ppm/ C max
mV max
V min
V max
pF max
V min
V max
pF max
V nom
V nom
mA max
mA max
mW max
s max
A max
A max
A max
A max
s max
s max
= +5 V
CLK
= 2 MHz external, f
5%, V
Test Conditions/Comments
V
SNR is Typically 82 dB for <V
V
V
fa = 9 kHz, fb = 9.5 kHz, f
fa = 9 kHz, fb = 9.5 kHz, f
Typically 35 ppm
Reference Load Current Change (0 A–300 A);
Reference Load Should Not Be Changed During
Conversion
V
V
V
V
I
I
The Internal Clock Has a Nominal Value of 2 MHz
Typically 6 mA
Typically 4 mA
Typically 50 mW
SOURCE
SINK
IN
IN
IN
DD
DD
IN
IN
5% for Specified Performance
5% for Specified Performance
SS
= 10 kHz Sine Wave
= 10 kHz Sine Wave
= 10 kHz.
= 0 V to V
= V
= 5 V
= 5 V
= –5 V
= 1.6 mA
SS
= 40 A
MIN
SAMPLE
to V
to T
5%
5%
DD
DD
5%, AGND = DGND =
= 83 kHz unless otherwise
MAX
unless otherwise noted.
SAMPLE
SAMPLE
IN
<41.5 kHz;
= 50 kHz
= 50 kHz
REV. D