Datasheet

ANALOG-TO-DIGITAL CONVERTER
Parameter Test Conditions Min Typ Max Unit
AC SPECIFICATIONS
SNR Signal to Noise Ratio f
IN
= 1.0 kHz 68 70 dB
SNRD Signal to Noise and Distortion f
IN
= 1.0 kHz 66 69 dB
THD Total Harmonic Distortion f
IN
= 1.0 kHz –76 –70 dB
CTLK Channel-Channel Crosstalk f
IN
= 1.0 kHz –89 –72 dB
CMRR Common-Mode Rejection Ratio –90 –72 dB
PSRR Power Supply Rejection Ratio 0.025 0.1 % FSR
ACCURACY
INL Integral Nonlinearity ± 0.6 ± 1.5 LSB
DNL Differential Nonlinearity ± 0.5 ± 1.0 LSB
No Missing Codes 12 Bits Guaranteed
Zero Error 0.1 0.25 % FSR
Gain Error
1
0.4 1.0 % FSR
TEMPERATURE DRIFT
Zero Error 0.025 % FSR
Gain Error
1
0.025 % FSR
INPUT VOLTAGE
V
IN
Voltage Span 4.0 V p-p
C
IN
Input Capacitance
2
10 pF
CONVERSION TIME
t
CONV
Total Conversion Time All 8 Channels 1.88 µs
NOTES
1
Excludes Internal Voltage Reference Error.
2
Analog Input Pins VIN0 to VIN7.
Typical values are neither tested nor guaranteed.
Specifications subject to change without notice.
VOLTAGE REFERENCE
Parameter Test Conditions Min Typ Max Unit
V
REF
Output Voltage Reference SENSE = REFCOM 1.96 2.0 2.04 V
Output Voltage Tolerance
1
SENSE = REFCOM 6 mV
Output Current 1.0 mA
Load Regulation 1.0 mA Load Current 0.3 1.5 mV
Power Supply Rejection Ratio 0.1 1.5 mV
Reference Input Resistance 8 kΩ
NOTES
1
Relative tolerance due to temperature change, T
MIN
to T
MAX
.
Specifications subject to change without notice.
POWER-ON RESET
Parameter Test Conditions Min Typ Max Unit
V
RST
Reset Threshold Voltage 3.25 4.0 V
V
HYST
Hysteresis Voltage 75 mV
Specifications subject to change without notice.
(V
DD
= AV
DD
= 5 V  5%, GND = AGND = 0 V, T
AMB
= –40C to +85C, CLKIN = 13 MHz,
VIN0 to VIN7 = 4.0 V p-p, V
REF
= 2.0 V, unless otherwise noted)
(V
DD
= AV
DD
= 5 V  5%, GND = AGND = 0 V, T
AMB
= –40C to +85C, CLKIN = 13 MHz, VIN0 to VIN7 =
4.0 V p-p, V
REF
= 2.0 V, unless otherwise noted)
(GND = AGND = 0 V, T
AMB
= –40C to +85C, CLKIN = 13 MHz, unless otherwise noted)
ADMC401
–3–
REV. B