Datasheet

Rev. A | Page 54 of 80 | July 2011
ADSP-BF504/ADSP-BF504F/ADSP-BF506F
ADC—SPECIFICATIONS
Specifications are subject to change without notice.
ADC—OPERATING CONDITIONS
Parameter Conditions Min Nominal Max Unit
V
DD
1
(AV
DD
, DV
DD
, V
DRIVE
)
1
Throughout the ADC sections of this data sheet, V
DD
refers to both AV
DD
and DV
DD
.
f
ADSCLK
= 24 MHz, f
S
up to 1.5 MSPS,
internal or external reference = 2.5 V ± 1%
unless otherwise noted
2.7 3.6 V
f
ADSCLK
= 25 MHz, f
S
up to 1.56 MSPS,
internal or external reference = 2.5 V ± 1%
unless otherwise noted
3.0 3.6 V
f
ADSCLK
= 32 MHz, f
S
up to 2.0 MSPS,
internal or external reference = 2.5 V ± 1%
unless otherwise noted
4.75 (AV
DD
, DV
DD
)
2.7 (V
DRIVE
)
5.25 (AV
DD
, DV
DD
)
5.25 (V
DRIVE
)
V
V
T
J
Junction Temperature 120-Lead LQFP @ T
AMBIENT
= –40°C to +85°C –40 +105 °C
Table 47. Operating Conditions (Analog, Voltage Reference, and Logic I/O)
Parameter Specification Unit Test Conditions/Comments
ANALOG INPUT
1
Single-Ended Input Range 0 V to V
REF
V RANGE= low
0 V to 2 × V
REF
VRANGE = high
Pseudo Differential Input Range: V
IN+
– V
IN–
2
0 V to V
REF
V RANGE = low
2 × V
REF
VRANGE = high
Fully Differential Input Range: V
IN+
and V
IN–
V
CM
± V
REF
/2 V V
CM
= common-mode voltage
3
= V
REF
/2, RANGE = low
V
CM
± V
REF
VV
CM
= V
REF
, RANGE = high
DC Leakage Current ±1 μA max V
A1
to V
A6
, V
B1
to V
B6
Input Capacitance
4
45 pF typ When in track
10 pF typ When in hold
INTERNAL VOLTAGE REFERENCE (OUTPUT)
5
Reference Output Voltage 2.5 ± 0.4% V @ 25°C, AV
DD
= 2.7 V to 5.25 V
Long-Term Stability
4
150 ppm typ For 1000 hours
Output Voltage Thermal Hysteresis
6
50 ppm typ
D
CAP
A, D
CAP
B Output Impedance
4
10 Ω typ
Reference Temperature Coefficient
4
60 max, 20 typ ppm/°C
V
REF
Noise
4
20 μV rms typ
EXTERNAL VOLTAGE REFERENCE (INPUT)
5
Reference Input Voltage Range
7
0.1 to AV
DD
V See ADC—Typical Performance Characteristics
DC Leakage Current
7
±2 μA max
Input Capacitance
4
25 pF typ
DIGITAL LOGIC INPUTS
Input High Voltage, V
INH
2.8 V min
Input Low Voltage, V
INL
0.4 V max
Input Current, I
IN
±15 nA typ V
IN
= 0 V or V
DRIVE
Input Capacitance, C
IN
4
5 pF typ