TLC2551 Datasheet, PDF (9/23 Pages) Texas Instruments – 5 V, LOW POWER, 12-BIT, 400 KSPS, SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN

TLC2551, TLC2552, TLC2555
5 V, LOW POWER, 12-BIT, 400 KSPS,
SERIAL ANALOG-TO-DIGITAL CONVERTERS WITH AUTOPOWER DOWN
SLAS276 –MARCH 2000
electrical characteristics over recommended operating free-air temperature range,
V_DD = V_REF = 4.5 V to 5.5 V, SCLK frequency = 20 MHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
VOH
VOL
IOZ
IIH
IIL
ICC
High-level output voltage
Low-level output voltage
Off-state output current
(high-impedance-state)
High-level input current
Low-level input current
Operating supply current
VDD = 5.5 V, IOH = –0.2 mA at 30 pF load
2.4
VDD = 5.5 V, IOL = 0.8 mA at 30 pF load
VO = VDD
VO = 0
CS = VDD
VI = VDD
VI = 0 V
CS at 0 V,
VDD = 4.5 V ~ 5.5 V
Autopower-down current (0.5 µs inactive)
ICC(AUTOPWDN)
Autopower-down current (5 µs inactive)
For all digital inputs,
0≤ VI ≤ 0.3 V or VI ≥ VDD– 0.3 V,
SCLK = 0, VDD = 4.5 V to 5.5 V, Ext ref
Selected analog input channel leakage
current
Selected channel at VDD
Selected channel at 0 V
Analog inputs
20
Ci
Input capacitance
Control Inputs
Input on resistance
VDD = 5.5 V
Delay time, delay from CS falling edge to
SDO valid, td(CSL-SDOV)
VDD = REF = 5.5 V, 30 pF
Delay time, delay from FS falling edge to
SDO valid, td(FSL-SDOV)
VDD = REF = 5.5 V, 30 pF
Delay time, delay from SCLK rising edge
to SDO valid, td(SCLKH-SDOV)
VDD = REF = 5.5 V, 30 pF
Delay time, delay from 17th SCLK rising
edge to SDO 3-state, td(SCLK17H-SDOZ)
VDD = REF = 5.5 V, 30 pF
tc
Conversion time
Conversion clock = internal oscillator
t(sample)
Sampling time
See Note 3
300
Autopower down
Action time
Wakeup time
ICC start to decrease
ICC down to MIN [ICC(AUTOPWDN)]
Autopower down
† _{All typical values are at VDD = 5 V, TA = 25°C.}
NOTE 3: Minimal t(sample) is given by 0.9 × 50 pF × (RS + 0.5 kΩ), where RS is the source output impedance.
TYP
1
–1
0.005
–0.005
3
45
5
28
0.5
1
0.5
MAX
0.4
2.5
–2.5
2.5
2.5
3.5
8
1
1
–1
50
25
500
40
UNIT
V
V
µA
µA
µA
mA
µA
µA
pF
Ω
ns
1 ns
11 ns
30 ns
SCLK
ns
SCLK
2 ms
SCLK
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