Datasheet

TLV2556
SLAS355A – DECEMBER 2001 – REVISED SEPTEMBER 2002
5
www.ti.com
electrical characteristics over recommended operating free-air temperature range, V
REF+
= 5 V,
SCLK frequency = 15 MHz when V
CC
= 5 V, V
REF+
= 2.5 V, SCLK frequency = 10 MHz when
V
CC
= 2.7 V (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
†
MAX UNIT
V
High level output voltage
V
CC
= 4.5 V, I
OH
= –1.6 mA
V
CC
= 2.7 V, I
OH
= –0.2 mA
30 pF 2.4
V
V
OH
High-level output voltage
V
CC
= 4.5 V, I
OH
= –20 µA
V
CC
= 2.7 V, I
OH
= –20 µA
30 pF V
CC
–0.1
V
V
Low level output voltage
V
CC
= 5.5 V, I
OL
= 1.6 mA
V
CC
= 3.6 V, I
OH
= 0.8 mA
30 pF 0.4
V
V
OL
Low-level output voltage
V
CC
= 5.5 V, I
OL
= –20 µA
V
CC
= 3.6 V, I
OH
= –20 µA
30 pF 0.1
V
I
High impedance off state output current
V
O
= V
CC
, CS at V
CC
1 2.5
A
I
OZ
High-impedance off-state output current
V
O
= 0 V, CS at V
CC
–1 –2.5
µA
CS at 0 V Ext Ref
V
CC
= 5 V 1.2
I
Operating supply current
CS at 0 V, Ext. Ref
V
CC
= 2.7 V 0.9
mA
I
CC
Operating supply current
CS at 0 V Int Ref
V
CC
= 5 V 3
mA
CS at 0 V, Int. Ref
V
CC
= 2.7 V 2.4
I
Software power down current
For all digital inputs,
0 V ≤ V
I
≤ 0.5 V or
Ext. Ref 0.1 1
µA
I
CC(SPD)
Software power-down current
0
V
≤
V
I
≤
0
.
5
V
or
V
I
≥ V
CC
– 0.5 V,
SCLK = 0 V
Int. Ref 0.1 1
µA
I
Auto power down current
For all digital inputs,
0 V ≤ V
I
≤ 0.5 V or
Ext. Ref 0.1 10
A
I
CC(APD)
Auto power-down current
0
V
≤
V
I
≤
0
.
5
V
or
V
I
≥ V
CC
– 0.5 V,
SCLK = 0 V
Int. Ref 1800
µA
I
IH
High-level input current V
I
= V
CC
0.005 2.5 µA
I
IL
Low-level input current V
I
= 0 V –0.005 –2.5 µA
I
Selected channel leakage current
Selected channel at V
CC
, Unselected
channel at 0 V
1
µA
I
lkg
Selected channel leakage current
Selected channel at 0 V, Unselected channel
at V
CC
–1
µA
f
Internal oscillator frequency
V
CC
= 4.5 V to 5.5 V 3.27
MHz
f
(OSC)
Internal oscillator frequency
V
CC
= 2.7 V to 3.6 V 2.56
MHz
t
Conversiontime 13 5 [f ]+25ns
V
CC
= 4.5 V to 5.5 V 4.15
µs
t
conv
Conversion time = 13.5 [f
(OSC)
] + 25 ns
V
CC
= 2.7 V to 3.6 V 5.54
µs
Internal oscillator frequency switch over
voltage
3.6 4.1 V
Z
Analog input MUX impedance
‡
V
CC
= 4.5 V 600
Ω
Z
i
Analog input MUX impedance
‡
V
CC
= 2.7 V 500
Ω
C
Input capacitance
Analog inputs 45 55
pF
C
i
Input capacitance
Control inputs 5 15
pF
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
The switch resistance is very nonlinear and varies with input voltage and supply voltage. This is the worst case.