ADS8370 Datasheet, PDF (6/29 Pages) Burr-Brown (TI) – 16-BIT, 600-kHz, PSEUDO-DIFFERENTIAL INPUT, MICROPOWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH SERIAL INTERFACE AND REFERENCE

ADS8370
SLAS450 – JUNE 2005
TIMING CHARACTERISTICS^(1)(2)(3)(4)
PARAMETER
CONVERSION AND SAMPLING
t_d1 Delay time, conversion start command to conversion start (aperture delay)
t_d2 Delay time, conversion end to BUSY fall
t_d4 Delay time, conversion start command to BUSY rise
t_d3 Delay time, CONVST rise to sample start
t_d5 Delay time, CS fall to sample start
t_d6 Delay time, conversion abort command to BUSY fall
DATA READ OPERATION
t_d12 Delay time, CS fall to MSB valid
t_d15 Delay time, FS rise to MSB valid
t_d7 Delay time, BUSY fall to MSB valid (if FS is high when BUSY falls)
t_d13 Delay time, SCLK rise to bit valid
t_d14 Delay time, CS rise to SDO 3-state
MISCELLANEOUS
t_d10 Delay time, PD rise to SDO 3-state
Nap mode
Delay time, total
t_d18 device resume
time
Full power down (external reference used with or without
1-µF||0.1-µF capacitor on REFOUT)
Full power down (internal reference used with or without
1-µF||0.1-µF capacitor on REFOUT)
t_d11 Delay time, untrimmed circuit full power-down resume time
Delay time, device Nap
t_{d16 power-down time Full power down (internal/external reference used)}
t_d17
Delay time, trimmed internal reference settling (either by turning on supply or
resuming from full power-down mode), with 1-µF||0.1-µF capacitor on REFOUT
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ADS8370I/ADS8370IB
UNIT
MIN TYP
MAX
REF
FIGURE
10 ns
5 ns
20 ns
5 ns
10 ns
10 ns
41,43
41 – 43
41
43
43
44
3
15 ns
45
6
18 ns
46,47
18 ns
47
2
10 ns
45– 47
6 ns
45
55 ns
300 ns
t_d11 + 2x
conversions
25⁽⁴⁾ ms
1 ms
200
ns
10
µs
4 ms
53,54
55
54
53
53,54
55
53,54
53
(1) All input signals are specified with t_r = t_f = 5 ns (10% to 90% of V_DD) and timed from a voltage level of (V_IL + V_IH)/2.
(2) All specifications typical at –40°C to 85°C, +VA = +4.75 V to +5.25 V, +VBD = +2.7 V to +5.25 V.
(3) All digital output signals loaded with 10-pF capacitors.
(4) Including t_d11, two conversions (time to cycle CONVST twice), and t_d17.
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