Changes to Ordering Guide .......................................................... 26
6/2009—Rev. 0 to Rev. A
Changes to Zero Error, T
MIN
to T
MAX
Parameter ........................... 3
Changes to Gain Error, T
MIN
to T
MAX
Parameter........................... 3
Changes to Endnote 3 ...................................................................... 4
Changes to Pin Configuration Section .......................................... 8
Changes to Evaluating the AD7674’s Performance Section...... 25
Changes to Ordering Guide .......................................................... 26
7/2003—Revision 0: Initial Version
Rev. B | Page 2 of 28
Data Sheet
SPECIFICATIONS
−40°C to +85°C, V
REF
= 4.096 V, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.
Table 2.
Parameter
RESOLUTION
ANALOG INPUT
Voltage Range
Operating Input Voltage
Analog Input CMRR
Input Current
Input Impedance
1
THROUGHPUT SPEED
Complete Cycle
Throughput Rate
Time Between Conversions
Complete Cycle
Throughput Rate
Complete Cycle
Throughput Rate
DC ACCURACY
Integral Linearity Error
Differential Linearity Error
No Missing Codes
Transition Noise
Zero Error, T
MIN
to T
MAX
Zero Error, T
MIN
to T
MAX
Zero Error Temperature Drift
Gain Error, T
MIN
to T
MAX 3
Gain Error, T
MIN
to T
MAX3
Gain Error Temperature Drift
Power Supply Sensitivity
AC ACCURACY
Signal-to-Noise
Test Conditions/Comments
Min
18
−V
REF
−0.1
65
100
Typ
Max
AD7674
Unit
Bits
V
V
dB
µA
V
IN+
− V
IN−
V
IN+
, V
IN−
to AGND
f
IN
= 100 kHz
800 kSPS throughput
+V
REF
AVDD
In warp mode
In warp mode
In warp mode
In normal mode
In normal mode
In impulse mode
In impulse mode
1
0
0
−2.5
−1
18
1.25
800
1
1.5
666
1.75
570
+2.5
+1.75
0.7
µs
kSPS
ms
µs
kSPS
µs
kSPS
LSB
2
LSB
Bits
LSB
LSB
LSB
ppm/°C
% of FSR
% of FSR
ppm/°C
LSB
dB
4
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
MHz
ns
ps rms
ns
ns
V
REF
= 5 V
In warp mode
In normal mode or impulse mode
All modes
In warp mode
In normal mode or impulse mode
All modes
AVDD = 5 V ± 5%
f
IN
= 2 kHz, V
REF
= 5 V
V
REF
= 4.096 V
f
IN
= 10 kHz, V
REF
= 4.096 V
f
IN
= 100 kHz, V
REF
= 4.096 V
V
IN+
= V
IN−
= V
REF
/2 = 2.5 V
f
IN
= 2 kHz
f
IN
= 10 kHz
f
IN
= 100 kHz
f
IN
= 2 kHz
f
IN
= 10 kHz
f
IN
= 100 kHz
f
IN
= 2 kHz, V
REF
= 4.096 V
f
IN
= 2 kHz, −60 dB input
−25
−85
±0.5
−0.034
−0.048
±1.6
±4
101
99
98
97
103
120
118
105
−115
−113
−98
98
40
26
2
5
+25
+85
+0.034
+0.048
97.5
Dynamic Range
Spurious-Free Dynamic Range
Total Harmonic Distortion
Signal-to-Noise-and-Distortion Ratio
−3 dB Input Bandwidth
SAMPLING DYNAMICS
Aperture Delay
Aperture Jitter
Transient Response
Overvoltage Recovery
Full-scale step
250
250
Rev. B | Page 3 of 28
AD7674
Parameter
REFERENCE
External Reference Voltage Range
REF Voltage with Reference Buffer
Reference Buffer Input Voltage Range
REFBUFIN Input Current
REF Current Drain
DIGITAL INPUTS
Logic Levels
V
IL
V
IH
I
IL
I
IH
DIGITAL OUTPUTS
Data Format
5
Pipeline Delay
6
V
OL
V
OH
POWER SUPPLIES
Specified Performance
AVDD
DVDD
OVDD
Operating Current
8
AVDD
DVDD
9
OVDD
9
POWER DISSIPATION
9
Test Conditions/Comments
REF
REFBUFIN = 2.5 V
REFBUFIN
800 kSPS throughput
Min
3
4.05
1.8
−1
Typ
4.096
4.096
2.5
330
Max
Data Sheet
Unit
V
V
V
µA
µA
AVDD + 0.1
4.15
2.6
+1
−0.3
+2.0
−1
−1
+0.8
DVDD + 0.3
+1
+1
V
V
µA
µA
I
SINK
= 1.6 mA
I
SOURCE
= −500 µA
0.4
OVDD − 0.6
V
V
4.75
4.75
2.7
800 kSPS throughput
5
5
5.25
5.25
DVDD + 0.3
7
V
V
V
mA
mA
µA
mW
µW
mW
mW
°C
PDBUF high at 500 kSPS
10
PDBUF high at 1 kSPS
10
PDBUF high at 800 kSPS
8
PDBUF low at 800 kSPS
8
T
MIN
to T
MAX
−40
16
6.5
50
78
160
114
126
90
126
138
+85
TEMPERATURE RANGE
11
Specified Performance
1
2
See the Analog Inputs section.
LSB means least significant bit. With the ±4.096 V input range, 1 LSB is 31.25 µV.
3
See the Terminology section. The nominal gain error is not centered at zero and is −0.029% of FSR. This specification is the deviation from this nominal value. These
specifications do not include the error contribution from the external reference, but do include the error contribution from the reference buffer if used.
4
All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale unless otherwise specified.
5
Data format parallel or serial 18-bit.
6
Conversion results are available immediately after completed conversion.
7
The max should be the minimum of 5.25 V and DVDD + 0.3 V.
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