ADS-230 Datasheet, PDF (3/12 Pages) Murata Power Solutions Inc. – Low-Power, 12-Bit, 1.0/1.5MHz Sampling A/D Converter

®
®
ADS-230/ADS-231
TIMING
Conversion Time, tCONV
Time for Conversion to Start, tEOC
Access Time, tACC (CL = 100pF)
Three-State Control Time, t1H, t0H
RL = 1k, CL = 10pF
Delay Time, RD Low to INT High
tINTH, CL = 100pF
Delay Time, EOC High to INT Low
tINTL, CL = 100pF
EOC High to Data Valid, tUPDATE
MUX Address Setup Time, tMS
MUX Address Hold Time, tMH
CS Setup Time, tCSS
CS Hold Time, tCSH
Wake-up Time, tWU
PD High to First S/H Low
DIGITAL OUTPUT
Logic Levels
Logic "1" (VS = 4.5V)
Logic "0", (VS = 4.5V)
Logic Loading "1"
Logic Loading "0"
Three-State Output Leakage
Three-State Output Capacitance
Output Coding
POWER REQUIREMENTS
Power Supply Range
+5V Supply, VS = AVS = DVS
Power Supply Current
DVS Supply Current, DIS
AVS Supply Current, AIS
Standby Current (AIS +DIS, PD = 0) “
Power Dissipation
+25°C
TYP.
740
95
10
25
35
25
5
—
—
—
—
1
ADS-230
–40 to +85°C
MIN.
MAX.
600
980
60
125
—
20
—
40
—
60
35
10
—
15
50
—
50
—
20
—
20
—
—
—
+25°C
TYP.
580
90
10
25
35
25
5
—
—
—
—
1
ADS-231
–40 to +85°C
MIN.
MAX.
510
660
60
125
—
20
—
40
—
60
35
10
—
15
50
—
50
—
20
—
20
—
—
—
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
—
2.4
—
—
—
0.4
—
—
–360
—
—
1.6
0.1
—
3
5
—
—
Binary
—
4.5
5.5
2
—
3
10
—
12
20
—
—
—
—
75
—
2.4
—
—
—
V
0.4
V
—
—
—
—
0.1
—
–360
µA
1.6
mA
3
µA
5
—
—
pF
Binary
—
4.75
2
—
32
—
50
—
—
—
5.25
V
3
mA
37
mA
—
µA
200
mW
Footnotes:
ΠWhen the input voltage at any pin exceeds the power supply rails (below
GND or Above VS) the input current must be limited to ±25mA or less. The
package input current limits to two the number of pins that can meet this
constant.
 In most cases, the maximum derated power dissipation will be reached only
during fault conditions.
Ž This is the ESD rating for the human body model, with a 100pF capacitor
discharged through a 1.5 kilohm resistor. The ESD rating for the machine
model is 200V.
 For best performance, the rising edge of the S/H pulse must not be near
either the falling or rising edge of EOC. The recommended values of tS/H are:
ADS-230: 5ns<tS/H<40ns, or 150ns<tS/H<550ns
ADS-231: 5ns<tS/H<40ns, or 150ns<tS/H<400ns
 The MUX inputs CH1IN and CH2IN are not used during dynamic testing of these
models. The internal multiplexer adds harmonic distortion at high input frequencies.
See the Typical Performance Curves for THD with and without the MUX.
‘ The contributions from the first nine harmonics are used in the calculation of THD.
’ Effective bits is equal to:
(SNR + Distortion – 1.76 + [20 log
Full Scale Amplitude
Actual Input Amplitude
])
6.02
“ Some units may have higher standby currents than the typical indicated. Production
testing of standby current is prohibitive due to the 10 second delay time on DIS after
PD is pulled low.
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