AD7840 Analog Devices, AD7840 Datasheet - Page 2

• Manufacturer Part Number: AD7840
• Description: Complete 14-Bit CMOS DAC
• Manufacturer: Analog Devices

Specifications of AD7840

• Resolution (bits): 14bit
• Dac Update Rate: 400kSPS
• Dac Settling Time: 2.5µs
• Max Pos Supply (v): +5.25V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Par,Ser

Parameter
DYNAMIC PERFORMANCE
DC ACCURACY
REFERENCE OUTPUT
REFERENCE INPUT
LOGIC INPUTS
ANALOG OUTPUT
AC CHARACTERISTICS
POWER REQUIREMENTS
NOTES
1
2
3
4
5
6
7
Specifications subject to change without notice.
AD7840–SPECIFICATIONS
Temperature ranges are as follows: J, K Versions, 0 C to +70 C; A, B Versions, –25 C to +85 C; S Version, –55 C to +125 C.
V
SNR calculation includes distortion and noise components.
Using external sample-and-hold (see Testing the AD7840).
Measured with respect to REF IN and includes bipolar offset error.
For capacitive loads greater than 50 pF, a series resistor is required (see Internal Reference section).
Sample tested @ +25 C to ensure compliance.
OUT
Signal to Noise Ratio
Total Harmonic Distortion (THD) –78
Peak Harmonic or Spurious Noise –78
Resolution
Integral Nonlinearity
Differential Nonlinearity
Bipolar Zero Error
Positive Full Scale Error
Negative Full Scale Error
REF OUT @ +25 C
REF OUT TC
Reference Input Range
Input Current
Input High Voltage, V
Input Low Voltage, V
Input Current, I
Input Current (CS Input Only)
Input Capacitance, C
Output Voltage Range
DC Output Impedance
Short-Circuit Current
Voltage Output Settling Time
Digital-to-Analog Glitch Impulse
Digital Feedthrough
V
V
I
I
Power Dissipation
DD
SS
DD
SS
Reference Load Change
Positive Full-Scale Change
Negative Full-Scale Change
(pk-pk) = 3 V
( REF OUT vs. I)
IN
3
IN
INL
INH
(SNR)
6
7
5
7
5
2
J, A
76
14
2.99
3.01
–1
2.85
3.15
50
2.4
0.8
10
0.1
20
4
4
10
2
+5
–5
14
6
100
2
0.9
10
10
10
60
10
10
3
1
–80
–80
14
2.85
100
K, B
78
2.99
3.01
–1
3.15
50
2.4
0.8
10
0.1
20
4
4
10
2
+5
–5
14
6
1
0.9
10
10
10
60
10
10
3
1
(V
C
L
DD
S
76
–78
–78
14
2.99
3.01
–1
2.85
3.15
50
2.4
0.8
10
0.1
20
4
4
10
2
+5
–5
15
7
110
= 100 pF. All specifications T
1
2
0.9
10
10
10
60
10
10
3
= +5 V
dB max
dB max
Bits
LSB max
LSB max
LSB max
LSB max
V min
V max
ppm/ C max
mV max
V min
V max
V nom
mW max
Units
dB min
LSB max
V min
V max
pF max
V nom
mA typ
nV secs typ
nV secs typ
V nom
mA max
mA max
–2–
A max
A max
A max
s max
s max
typ
5%, V
SS
= –5 V
V
V
Guaranteed Monotonic
3 V
Settling Time to within 1/2 LSB of Final Value
Typically 70 mW
Test Conditions/Comments
V
Typically 82 dB at +25 C for 0 < V
Typically –84 dB at +25 C for 0 < V
Typically –84 dB at +25 C for 0 < V
Reference Load Current Change (0–500 A)
V
V
V
V
Typically 2 s
Typically 2.5 s
Output Unloaded, SCLK = +5 V. Typically 10 mA
Output Unloaded, SCLK = +5 V. Typically 4 mA
5% for Specified Performance
5% for Specified Performance
OUT
OUT
OUT
DD
DD
IN
IN
MIN
= 0 V to V
=V
5%, AGND = DGND = O V, REF IN = +3 V, R
= 5 V
= 5 V
to T
= 1 kHz Sine Wave, f
= 1 kHz Sine Wave, f
= 1 kHz Sine Wave, f
5%
SS
MAX
to V
unless othewise noted.)
5%
5%
DD
DD
SAMPLE
SAMPLE
SAMPLE
= 100 kHz
= 100 kHz
= 100 kHz
OUT
OUT
OUT
< 20 kHz
< 20 kHz
< 20 kHz
L
= 2 k ,
REV. B
4
4
4