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ADS7888SDBVR Datasheet(PDF) 7 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
Part # ADS7888SDBVR
Description  10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
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Manufacturer  BURR-BROWN [Burr-Brown (TI)]
Direct Link  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

ADS7888SDBVR Datasheet(HTML) 7 Page - Burr-Brown (TI)

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TIMING REQUIREMENTS (see Figure 1)
ADS7887
ADS7888
SLAS468 – JUNE 2005
ADS7888 SPECIFICATIONS (continued)
+V
DD = 2.35 V to 5.25 V, TA = –40°C to 125°C, fsample = 1.25 MHz
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VDD = 5 V
5.5
7.5
Power dissipation in static state
mW
VDD = 3 V
3
4.5
Power down time
0.1
µs
Power up time
0.8
µs
Invalid conversions after power up
1
TEMPERATURE RANGE
Specified performance
–40
125
°C
All specifications typical at T
A = –40°C to 125°C, VDD = 2.35 V to 5.25 V, unless otherwise specified.
PARAMETER
TEST CONDITIONS(1)
MIN
TYP
MAX
UNIT
VDD = 3 V
14
× t
SCLK
ADS7887
VDD = 5 V
14
× t
SCLK
tconv
Conversion time
ns
VDD = 3 V
12
× t
SCLK
ADS7888
VDD = 5V
12
× t
SCLK
VDD = 3 V
40
Minimum quiet time needed from bus 3-state to start
tq
ns
of next conversion
VDD = 5 V
40
VDD = 3 V
15
25
td1
Delay time, CS low to first data (0) out
ns
VDD = 5 V
13
25
VDD = 3 V
10
tsu1
Setup time, CS low to SCLK low
ns
VDD = 5 V
10
VDD = 3 V
15
25
td2
Delay time, SCLK falling to SDO
ns
VDD = 5 V
13
25
VDD < 3 V
7
th1
Hold time, SCLK falling to data valid(2)
ns
VDD > 5 V
5.5
VDD = 3 V
10
25
td3
Delay time, 16th SCLK falling edge to SDO 3-state
ns
VDD = 5 V
8
20
VDD = 3 V
25
40
tw1
Pulse duration, CS
ns
VDD = 5 V
25
40
VDD = 3 V
17
30
td4
Delay time, CS high to SDO 3-state, Figure 3
ns
VDD = 5 V
15
25
VDD = 3 V
0.4
× t
SCLK
twH
Pulse duration, SCLK high
ns
VDD = 5 V
0.4
× t
SCLK
VDD = 3 V
0.4
× t
SCLK
twL
Pulse duration, SCLK low
ns
VDD = 5 V
0.4
× t
SCLK
VDD = 3 V
25
Frequency, SCLK
MHz
VDD = 5 V
25
Delay time, second falling edge of clock and CS to
VDD = 3 V
-2
5
td5
enter in powerdown (use min spec not to accidently
ns
VDD = 5 V
-2
5
enter in powerdown) Figure 4
Delay time, CS and 10th falling edge of clock to
VDD = 3 V
2
-5
td6
enter in powerdown (use max spec not to accidently
ns
VDD = 5 V
2
-5
enter in powerdown) Figure 4
(1)
3-V Specifications apply from 2.35 V to 3.6 V, and 5-V specifications apply from 4.75 V to 5.25 V.
(2)
With 50-pf load.
7


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