Datasheet

MAX19707
10-Bit, 45Msps, Ultra-Low-Power
Analog Front-End
8 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3V, OV
DD
= 1.8V, internal reference (1.024V), C
L
≈ 10pF on all digital outputs, f
CLK
= 45MHz (50% duty cycle), Rx ADC input
amplitude = -0.5dBFS, Tx DAC output amplitude = 0dBFS, differential Rx ADC input, differential Tx DAC output, C
REFP
= C
REFN
=
C
COM
= 0.33µF, unless otherwise noted. C
L
< 5pF on all aux-DAC outputs. Typical values are at T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Enable Time from Tx to Rx, (Ext2-
Tx to Ext2-Rx, Ext4-Tx to Ext4-Rx,
and SPI4-Tx to SPI3-Rx States)
t
ENABLE
,
RX
ADC settles to within 1dB SINAD
500
ns
Enable Time from Rx to Tx, (Ext1-
Rx to Ext1-Tx, Ext4-Rx to Ext4-Tx,
and SPI3-Rx to SPI4-Tx States)
t
ENABLE
,
TX
DAC settles to within 10 LSB error
500
ns
Enable Time from Tx to Rx, (Ext1-
Tx to Ext1-Rx, Ext3-Tx to Ext3-Rx,
and SPI1-Tx to SPI2-Rx States)
t
ENABLE
,
RX
ADC settles to within 1dB SINAD 4.1 µs
Enable Time from Rx to Tx, (Ext2-
Rx to Ext2-Tx, Ext3-Rx to Ext3-Tx,
and SPI1-Rx to SPI2-Tx States)
t
ENABLE
,
TX
DAC settles to within 10 LSB error 7.0 µs
INTERNAL REFERENCE (V
REFIN
= V
DD
; V
REFP
, V
REFN
, V
COM
levels are generated internally)
Positive Reference V
REFP
- V
COM
0.256
V
Negative Reference V
REFN
- V
COM
-0.256
V
Common-Mode Output Voltage V
COM
V
DD
/ 2
- 0.15
V
DD
/ 2
V
DD
/ 2
+ 0.15
V
Maximum REFP/REFN/COM
Source Current
I
SOURCE
2mA
Maximum REFP/REFN/COM
Sink Current
I
SINK
2mA
Differential Reference Output V
REF
V
REFP
- V
REFN
+0.489 +0.512 +0.534
V
Differential Reference Temperature
Coefficient
REFTC
±10
ppm/°C
BUFFERED EXTERNAL REFERENCE (external V
REFIN
= 1.024V applied; V
REFP
, V
REFN
, V
COM
levels are generated internally)
Reference Input Voltage V
REFIN
1.024
V
Differential Reference Output V
DIFF
V
REFP
- V
REFN
0.512
V
Common-Mode Output Voltage V
COM
V
DD
/ 2
V
Maximum REFP/REFN/COM
Source Current
I
SOURCE
2mA
Maximum REFP/REFN/COM
Sink Current
I
SINK
2mA
REFIN Input Current
-0.7
µA
REFIN Input Resistance
500
kΩ