Datasheet

–3–
AD7671
Parameter Conditions Min Typ Max Unit
POWER SUPPLIES
Specified Performance
AVDD 4.75 5 5.25 V
DVDD 4.75 5 5.25 V
OVDD 2.7 5.25
4
V
Operating Current
5
1 MSPS Throughput
AVDD 15 mA
DVDD
6
7.2 mA
OVDD
6
37 mA
Power Dissipation
6, 7
666 kSPS Throughput
8
84 95 mW
100 SPS Throughput
8
15 mW
1 MSPS Throughput
5
112 125 mW
In Power-Down Mode
9
7 mW
TEMPERATURE RANGE
10
Specified Performance T
MIN
to T
MAX
–40 +85 ∞C
NOTES
1
LSB means least significant bit. With the ± 5 V input range, one LSB is 152.588 mV.
2
See Definition of Specifications section. These specifications do not include the error contribution from the external reference.
3
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.
4
The max should be the minimum of 5.25 V and DVDD + 0.3 V.
5
In Warp Mode.
6
Tested in Parallel Reading Mode.
7
Tested with the 0 V to 5 V range and V
IN
– V
INGND
= 0 V. See Power Dissipation section.
8
In Impulse Mode.
9
With OVDD below DVDD + 0.3 V and all digital inputs forced to DVDD or DGND, respectively.
10
Contact factory for extended temperature range.
Specifications subject to change without notice.
Table I. Analog Input Configuration
Input Voltage Input
Range IND(4R) INC(4R) INB(2R) INA(R) Impedance
1
± 4 REF
2
V
IN
INGND INGND REF 1.63 kW
± 2 REF V
IN
V
IN
INGND REF 948 W
± REF V
IN
V
IN
V
IN
REF 711 W
0 V to 4 REF V
IN
V
IN
INGND INGND 948 W
0 V to 2 REF V
IN
V
IN
V
IN
INGND 711 W
0 V to REF V
IN
V
IN
V
IN
V
IN
Note 3
NOTES
1
Typical analog input impedance.
2
With REF = 3 V, in this range, the input should be limited to –11 V to +12 V.
3
For this range the input is high impedance.
TIMING SPECIFICATIONS
Parameter Symbol Min Typ Max Unit
Refer to Figures 11 and 12
Convert Pulsewidth t
1
5ns
Time between Conversions t
2
1/1.25/1.5 Note 1 ms
(Warp Mode/Normal Mode/Impulse Mode)
CNVST LOW to BUSY HIGH Delay t
3
30 ns
BUSY HIGH All Modes Except in Master Serial Read after t
4
0.75/1/1.25 ms
Convert Mode (Warp Mode/Normal Mode/Impulse Mode)
Aperture Delay t
5
2ns
End of Conversion to BUSY LOW Delay t
6
10 ns
Conversion Time (Warp Mode/Normal Mode/Impulse Mode) t
7
0.75/1/1.25 ms
Acquisition Time t
8
250 ns
RESET Pulsewidth t
9
10 ns
(–40C to +85C, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)
REV. C