ABSOLUTE MAXIMUM RATINGS
PARAMETER
Power Supply Voltage,
Digital Inputs, Pins 8,9,11,12,18
Analog Input, Pin 5
Digital Outputs
Lead Temp. (10 seconds)
Pin 1
Pin 19
Pin 10
–0.5 to +5.5V
+300°C
LIMITS
–0.3 to +7V
–0.3 to +18V
+0.3 to –18V
–3.8 to +6.6V
–0.5 to +5.5V
(short circuit protected to ground)
FUNCTIONAL SPECIFICATIONS
(Apply over the operating temperature range with 20MHz clock and ±15V and +5V
power supply voltages, unless otherwise specified.)
ANALOG INPUTS
MIN. TYP.
MAX.
UNITS
Single-Ended, Non-Isolated
Input Range, dc-20MHz
Input Resistance
Input Capacitance
0
—
+5.0
Volts
1.95
2
—
kΩ
—
5
10
pF
DIGITAL INPUTS
Logic Levels
Logic 1
Logic 0
Logic Loading
Logic 1
Logic 0
Clock Pulse Widths
"High"
"Low"
+2.0
—
—
Volts
—
—
+0.8
Volts
—
—
+160
µA
—
—
–0.5
mA
20
—
—
ns
20
—
—
ns
DIGITAL OUTPUTS
Coding
Resolution
Logic Levels
Logic 1
Logic 0
Logic Loading
Logic 1
Logic 0
Output Data Valid Delay
From Rising Edge
Output Hold Time
Straight Binary
8 Bits
+2.4
—
—
Volts
—
—
+0.4
Volts
—
—
–1
mA
—
—
+1
mA
—
—
40
ns
6
—
—
ns
PERFORMANCE
Sampling Rate ➀
Differential Linearity
Code Transitions,
+25°C
0 to +70°C
–55 to +125°C
Integral Linearity, +25°C
End-point
Best-fit Line
Over Temperature End-point
Best-fit Line
Zero-Scale Offset
Code "0" to "1" Transition
+25°C
–55 to +125°C
20
—
—
MHz
—
±0.5 ±0.75
LSB
—
±0.5 ±0.75
LSB
—
±0.5 ±0.85
LSB
—
±0.5
±1
LSB
—
±0.35 ±0.75
LSB
—
—
±1.75
LSB
—
—
±1
LSB
—
±0.5
±1
LSB
—
±0.5 ±1.5
LSB
ADC-228A
8-Bit, 20MHz, Complete Flash A/D Converter
PERFORMANCE
MIN. TYP.
MAX.
UNITS
Gain error
—
±0.5 ±1.5
LSB
Full Scale Absolute Accuracy
—
±0.5 ±1.5
LSB
Differential Gain ➁
Differential Phase ➁
—
2
—
%
—
1
—
deg.
Aperture Delay
—
8
—
ns
Aperture Jitter
—
50
—
ps
No Missing Codes
Power Supply Rejection
Over the operating temperature range
±0.02% FSR/%VS maximum
DYNAMIC PERFORMANCE
Total Harm. Distortion, –0.5dB
DC to 2.5 MHz
2.5 MHz to 5 MHz
5 MHz to 10 MHz
Signal-to-Noise Ratio
and Distortion, –0.5dB
DC to 2.5 MHz
2.5 MHz to 5 MHz
5 MHz to 10 MHz
Signal-to-Noise Ratio
w/o Distortion, –0.5 dB
DC to 2.5 MHz
2.5 MHz to 5 MHz
5 MHz to 10 MHz
Effective Bits, –0.5dB
DC to 2.5 MHz
2.5 MHz to 5 MHz
5 MHz to 10 MHz
Input Bandwidth
Large Signal (–3dB)
Small Signal (–20dB)
—
–55
–53
dB
—
–49
–44
dB
—
–39
–36
dB
44
49
—
dB
41
46
—
dB
35
38
—
dB
45
48
—
dB
44
49
—
dB
42
45
—
dB
7.1
7.75
—
Bits
6.8
7.4
—
Bits
5.6
6.1
—
Bits
15
—
—
MHz
40
—
—
MHz
POWER SUPPLY
Power Supply Range
+15V Supply
–15V Supply
+5V Supply
Power Supply Current
+15V Supply
–15V Supply
+5V Supply
Power Dissipation
±15V, +5V Nominal
+11
–11
+4.75
—
—
—
—
+15 +15.75
–15 –15.75
+5
+5.25
+12
+20
–13
–20
+70
+80
0.7
0.9
Volts
Volts
Volts
mA
mA
mA
Watts
PHYSICAL/ENVIRONMENTAL
Operating Temp. Range, Case
ADC-228AMC
ADC-228AMM, ADC-228A/883
Storage Temp. Range
Package Type
Weight
0 to +70°C
–55 to +125°C
–65 to +150°C
24-pin, ceramic DDIP
0.3 ounces (8.5 grams)
Footnotes:
➀ At full power input and chip selects enabled.
➁ For 10-step, 40 IRE NTSC ramp test.
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDA_ADC-228A.B01 Page 2 of 4