Temperature Range ........................................ 0°C to 70°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
CC
= +V
REF
= 5V ±10%, –V
REF
= GND, f
CLK
= 1.46MHz,
T
A
= Operating temperature range (Note 1)
ML2252B, ML2259B
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
ML2252C, ML2259C
TYP
MAX
UNITS
Converter and Multiplexer Characteristics
Total Unadjusted Error
+V
REF
Voltage Range
–V
REF
Voltage Range
Reference Input Resistance
Analog Input Range
Power Supply Sensitivity
(Note 3)
DC, V
CC
= 5V ±10%
100mVp-p, 100kHz
Sine on V
CC
, V
IN
= 0
I
OFF
, Off Channel Leakage
Current (Note 9)
On Channel = V
CC,
(Note 4)
Off Channel = 0V
On Channel = 0V, (Note 4)
Off Channel = V
CC
I
ON
, On Channel Leakage
Current (Note 9)
On Channel = 0V, (Note 4)
Off Channel = V
CC
On Channel = V
CC,
(Note 4)
Off Channel = 0V
–1
1
–1
1
–1
1
V
REF
= V
CC,
(Note 2)
–V
REF
GND – 0.1
14
GND – 0.1
±1/32
±1/16
–1
1
20
±1/2
V
CC
+ 0.1
+V
REF
35
–V
REF
GND – 0.1
14
20
±1
V
CC
+ 0.1
+V
REF
28
V
CC
+ 0.1
±1/32
±1/16
±1/4
LSB
V
V
k½
V
LSB
LSB
µA
µA
µA
µA
V
CC
+ 0.1 GND – 0.1
±1/4
SYMBOL
Digital and DC
V
IN(1)
V
IN(0)
I
IN(1)
I
IN(0)
V
OUT(1)
V
OUT(0)
I
OUT
I
CC
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Logical “1” Input Voltage
Logical “0” Input Voltage
Logical “1” Input Current
Logical “0” Input Current
Logical “1” Output Voltage
Logical “0” Output Voltage
Three-State Output Current
V
IN
= V
CC
V
IN
= 0V
I
OUT
= –2mA
I
OUT
= 2mA
V
OUT
= 0V
V
OUT
= V
CC
Supply Current
2.0
0.8
1
–1
4.0
0.4
–1
1
1.5
3
V
V
µA
µA
V
V
µA
µA
mA
4
ML2252, ML2259
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
(Continued)
CONDITIONS
MIN
TYP
MAX
UNITS
AC and Dynamic Performance Characteristics (Note 5)
t
ACQ
f
CLK
t
C
SNR
Sample and Hold Acquisition
Clock Frequency
Conversion Time
Signal to Noise Ratio
V
IN
= 51kHz, 5V sine.
f
CLK
= 1.46MHz
(f
SAMPLING
> 150kHz). Noise is sum
of all nonfundamental components
up to 1/2 of f
SAMPLING
V
IN
= 51kHz, 5V sine.
f
CLK
= 1.46MHz
(f
SAMPLING
> 150kHz).
THD is sum 2, 3, 4, 5 harmonics
relative to fundamental
V
IN
= f
A
+ f
B
. f
A
= 49kHz, 2.5V sine.
f
B
= 47.8kHz, 2.5V sine,
f
CLK
= 1.46MHz
(f
SAMPLING
> 150kHz). IMD is (f
A
+ f
B
),
(f
A
– f
B
), (2f
A
+ f
B
), (2f
A
– f
B
), (f
A
+ 2f
B
),
(f
A
– 2f
B
) relative to fundamental
V
IN
= 0 to 50kHz. 5V sine relative
to 1kHz
(Note 6)
40
1/2
50
Synchronous only, (Note 7)
40
50
0
50
Figure 1, C
L
= 50pF
Figure 1, C
L
= 10pF
t
1H, 0H
C
IN
C
OUT
Output Disable for DB0–DB7
Figure 1, C
L
= 50pF
Figure 1, C
L
= 10pF
Capacitance of Logic Input
Capacitance of Logic Outputs
5
10
100
50
100
50
10
8.5
47
1/2
1460
8.5 + 250ns
1/f
CLK
kHz
1/f
CLK
dB
THD
Total Harmonic Distortion
–60
dB
IMD
Intermodulation Distortion
–60
dB
FR
t
DC
t
EOC
t
WS
t
SS
t
WALE
t
S
t
H
t
H1, H0
Frequency Response
Clock Duty Cycle
End of Conversion Delay
Start Pulse Width
Start Pulse Setup Time
Address Latch Enable
Pulse Width
Address Setup
Address Hold
Output Enable for DB0–DB7
0.1
60
1/2 + 250ns
dB
%
1/f
CLK
ns
ns
ns
ns
ns
ns
ns
ns
ns
pF
pF
Note 1: Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
Note 2: Total unadjusted error includes offset, full scale, linearity, multiplexer and sample and hold errors.
Note 3: For –V
REF
• V
IN
(+) the digital output code will be 0000 0000. Two on-chip diodes are tied to each analog input which will forward conduct for analog input voltages
one diode drop below ground or one diode drop greater than the V
CC
supply. Be careful, during testing at low V
CC
levels (4.5V), as high level analog inputs (5V) can
cause this input diode to conduct — especially at elevated temperatures, and cause errors for analog inputs near full scale. The spec allow 100mV forward bias of either
diode. This means that as long as the analog V
IN
or V
REF
does not exceed the supply voltage by more than 100mV, the output code will be correct. To achieve an
absolute 0V
DC
to 5V
DC
input voltage range will therefore require a minimum supply voltage of 4.900V
DC
over temperature variations, initial tolerance and loading.
Note 4: Leakage current is measured with the clock not switching.
Note 5: C
L
= 50pF, timing measured at 50% point.
Note 6: A 40% to 60% clock duty cycle range insures proper operation at all clock frequencies. In the case that an available clock has a duty cycle outside of these limits,
the minimum time the clock is high or the minimum time the clock is low must be at least 40ns. The maximum time the clock can be high or low is 60µs.
Note 7: The conversion start setup time requirement only needs to be satisfied if a conversion must be synchronized to a given clock rising edge. If the setup time is not met,
start conversion will have an uncertainty of one clock pulse.
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