®
AMERICAN MICROSYSTEMS, INC
ADC04R01
June, 1998 Preliminary AMI 0.8 micron CMOS
1
ADC04R01, 3.0V to 3.6V, 4-bit 44 MSPS, Flash ADC
AVDD Nominal 3.3V (3.0 to 3.6V).
AVSS Analog ground.
Input 11MHz bandlimted
signal with a 750mV DC
offset and a 1V peak to
peak full scale amplitude.
CK 44MHz sampling clock.
Vref Nominal 1.5V analog
reference.
OUT[3:0] ADC conversion results.
Unsigned binary output.
FEATURES
44 MSPS.
4-bit unsigned binary output.
Analog supply voltage 3.0V to 3.6V
APPLICATIONS
• Fast data acquisition
• Instrumentation
• DSP control loop
• Audio processing
GENERALDESCRIPTION
The flash ADC04R01 is intended to oversample
an 11MHz bandlimted signal with a 750mV DC
offset and a 1V peak to peak amplitude. The
conversion range is .25V to 1.25V with 62.5mV
steps. A nominal 1.5V external reference and a
44MHz sampling clock are required
CK
Vref
Input Out[3:0]
®
AMERICAN MICROSYSTEMS, INC
ADC04R01
June, 1998 Preliminary AMI 0.8 micron CMOS
2
Parameter Temp Min Typ Max Units
RESOLUTION Bits
DC ACCURACY
Differential Linearity
Integral Linearity
No Missing Codes
+25°C
+25°C
Full Guaranteed
LSB
LSB
LSB
INITIAL OFFSET ERROR
Top of Reference Ladder
Bottom of Reference Ladder
Offset Drift Coefficient
+25°C
+25°C
LSB
LSB
LSB
uV/°C
ANALOG INPUT
Input Bias Current (latched)
Input Bias Current (sampling)
Input Resistance
Input Capacitance
Large Signal Bandwidth
Input Slew Rate
uA
uA
k Ohm
pF
Hz
V/ms
REFERENCE INPUT
Reference Ladder Resistance
Reference Input Bandwidth +25°C
+25°COhm
MHz
DYNANIC PERFORMANCE
Conversion Rate
Output Delay (tPD)
Transient Response
Overvoltage Recovery Time
Output Rise Time
Output Fall Time
+25°C
+25°C
+25°C
+25°C
44 MSPS
ns
ns
ns
ns
ns
ENCODE INPUT
Logic “1” Voltage
Logic “0” Voltage
Logic “1” Current
Logic “0” Current
Input Capacitance
Encode Pulse Width (Low)
Encode Pulse Width (High) +25°C
+25°C
V
V
mA
mA
pf
ns
ns
OVERFLOW INHIBIT INPUT
0 V Input Current Full mA
AC LINEARITY
Effective Number of Bits (ENOB) Bits
®
AMERICAN MICROSYSTEMS, INC
ADC04R01
June, 1998 Preliminary AMI 0.8 micron CMOS
3
Parameter Temp Min Typ Max Units
In-Band Harmonics
Dc to X.X MHz
Dc to X.X MHz
Dc to X.X MHz
Signal-to-Noise + Distortion (S/(N+D))
Intermodulation Distortion IMD¹
Spurious Free Dynamic Range (SFDR)
Total Harmonic Distortion (THD)³
-50 @
5MHz
input tone
24.5
-37 -30
5MHz
input tone
dB
dB
dB
dB
dB
dB
dB
Parameter Temp Min Typ Max Units
POWER SUPPLY
Operating Voltage
AVDD
AVSS
Volts
Volts
VREF 1.5 V
Operating Current
IADD²
IDDD
Standby Mode 12 mA
mA
mA
POWER CONSUMPTION
Operating Mode
Standby Mode mA
mA
®
AMERICAN MICROSYSTEMS, INC
ADC04R01
June, 1998 Preliminary AMI 0.8 micron CMOS
4
ABSOLUTE MAXIMUM RATINGS Units
Supply Voltage (–VS) V
Analog-to-Digital Supply Voltage
Differential V
Analog Input Voltage V
Digital Input Voltage V
Reference Input Voltage (+VREF – VREF) V
Differential Reference Voltage V
Reference Midpoint Current mA
Digital Output Current mA
Operating Temperature Range °C
Storage Temperature Range °C
Junction Temperature °C
Lead Soldering Temperature (10 sec.) °C
Recommended Operating Conditions
Parameter Input Voltage
–VS Min Nominal Max
+VREF
–VREF
Analog Input
Notes: 1 5.5 & 6 MHz two tone test, 2 44 MHz sampling rate, 3 5MHz input tone
