Datasheet

ELECTRICAL CHARACTERISTICS
ADS6425
SLWS197B – MARCH 2007 – REVISED JUNE 2009 ......................................................................................................................................................... www.ti.com
Typical values are at 25 ° C, min and max values are across the full temperature range T
MIN
= – 40 ° C to T
MAX
= 85 ° C, AVDD =
LVDD = 3.3V, sampling rate = 125MSPS, 50% clock duty cycle, – 1dBFS differential analog input, internal reference mode
(unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
RESOLUTION 12 Bits
ANALOG INPUT
Differential input voltage range 2.0 V
pp
Differential input capacitance 7 pF
Analog input bandwidth 500 MHz
Analog input common mode current
155 µ A
(per input pin of each ADC)
REFERENCE VOLTAGES
VREFB Internal reference bottom voltage 1.0 V
VREFT Internal reference top voltage 2.0 V
VCM Common mode output voltage 1.5 V
VCM Output current capability ± 4 mA
DC ACCURACY
No missing codes Assured
E
O
Offset error -15 ± 2 +15 mV
Offset error temperature coefficient
0.05 mV/ ° C
Offset error temperature coefficient,
channel-channel
Internal reference error
-15 ± 5 15 mV
(VREFT-VREFB)
Internal reference error temperature
0.25 mV/ ° C
coefficient
Does not include gain error caused due to
E
G
Gain error
(1)
-1 0.3 +1 % FS
internal reference error
Gain error temperature coefficient
0.005 Δ %/ ° C
Gain error temperature coefficient,
channel-channel
DNL Differential nonlinearity -0.9 0.5 2.0 LSB
INL Integral nonlinearity -2.5 1.0 2.5 LSB
PSRR DC Power supply rejection ratio – 0.5 mV/V
POWER SUPPLY
I
CC
Total supply current 502 mA
I
AVDD
Analog supply current 412 mA
I
LVDD
LVDS supply current 90 mA
Total power 1.65 1.8 W
Power down Input clock running 77 150 mW
(1) This is specified by design and characterization. It is not tested in production.
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