Datasheet

REV. 0
–3–
AD7650
TIMING SPECIFICATIONS
Parameter Symbol Min Typ Max Unit
REFER TO FIGURES 8 AND 9
Convert Pulsewidth t
1
5ns
Time Between Conversions t
2
1.75/2/2.25 Note 1 µs
(Warp Mode/Normal Mode/Impulse Mode)
CNVST LOW to BUSY HIGH Delay t
3
30 ns
BUSY HIGH All Modes Except in t
4
1.5/1.75/2 µs
Master Serial Read After 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 t
7
1.5/1.75/2 µs
(Warp Mode/Normal Mode/Impulse Mode)
Acquisition Time t
8
250 ns
RESET Pulsewidth t
9
10 ns
REFER TO FIGURES 10, 11 AND 12
(Parallel Interface Modes)
CNVST LOW to DATA Valid Delay t
10
1.5/1.75/2 µs
(Warp Mode/Normal Mode/Impulse Mode)
DATA Valid to BUSY LOW Delay t
11
45 ns
Bus Access Request to DATA Valid t
12
40 ns
Bus Relinquish Time t
13
515ns
REFER TO FIGURES 13 AND 14
(Master Serial Interface Modes)
2
CS LOW to SYNC Valid Delay t
14
10 ns
CS LOW to Internal SCLK Valid Delay
2
t
15
10 ns
CS LOW to SDOUT Delay t
16
10 ns
CNVST LOW to SYNC Delay t
17
25/275/525 ns
(Warp Mode/Normal Mode/Impulse Mode)
SYNC Asserted to SCLK First Edge Delay t
18
4ns
Internal SCLK Period t
19
40 75 ns
Internal SCLK HIGH (INVSCLK Low)
3
t
20
30 ns
Internal SCLK LOW (INVSCLK Low)
3
t
21
9.5 ns
SDOUT Valid Setup Time t
22
4.5 ns
SDOUT Valid Hold Time t
23
3ns
Parameter Condition Min Typ Max Unit
POWER SUPPLIES (continued)
Operating Current
5
570 kSPS Throughput
AVDD 15.5 mA
DVDD
6
4.2 mA
OVDD
6
100 µA
Power Dissipation
6
570 kSPS Throughput
5
115 mW
444 kSPS Throughput
7
77 mW
100 SPS Throughput
7
21 µW
In Power-Down Mode
8
7 µW
TEMPERATURE RANGE
9
Specified Performance T
MIN
to T
MAX
–40 +85 °C
NOTES
1
LSB means Least Significant Bit. With the 0 V to 2.5 V input range, one LSB is 38.15 µV.
2
See Definition of Specifications section. These specifications do not include the error contribution from the external reference.
3
Tested in warp mode.
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
In warp mode.
6
Tested in parallel reading mode.
7
In impulse mode.
8
With all digital inputs forced to OVDD or OGND respectively.
9
Contact factory for extended temperature range.
Specifications subject to change without notice.
(–40ⴗC to +85ⴗC, AVDD = DVDD = 5 V, OVDD = 2.7 V to 5.25 V, unless otherwise noted.)
REV. 0
–3–
AD7650