Datasheet

LTC2188
4
2188f
analog inpuT
The l denotes the specifications which apply over the full operating temperature range, otherwise
specifications are at T
A
= 25°C. (Note 5)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Analog Input Range (A
IN
+
– A
IN
–
) 1.7V < V
DD
< 1.9V
l
1 to 2 V
P-P
V
IN(CM)
Analog Input Common Mode (A
IN
+
+ A
IN
–
)/2 Differential Analog Input (Note 8)
l
0.7 V
CM
1.25 V
V
SENSE
External Voltage Reference Applied to SENSE External Reference Mode
l
0.625 1.250 1.300 V
I
INCM
Analog Input Common Mode Current Per Pin, 20Msps 32 µA
I
IN1
Analog Input Leakage Current (No Encode) 0 < A
IN
+
, A
IN
–
< V
DD
l
–1 1 µA
I
IN2
PAR/SER Input Leakage Current 0 < PAR/SER < V
DD
l
–3 3 µA
I
IN3
SENSE Input Leakage Current 0.625 < SENSE < 1.3V
l
–6 6 µA
t
AP
Sample-and-Hold Acquisition Delay Time 0 ns
t
JITTER
Sample-and-Hold Acquisition Delay Jitter Single-Ended Encode
Differential Encode
0.07
0.09
ps
RMS
ps
RMS
CMRR Analog Input Common Mode Rejection Ratio 80 dB
BW-3B Full-Power Bandwidth Figure 6 Test Circuit 550 MHz
converTer characTerisTics
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 5)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Resolution (No Missing Codes)
l
16 Bits
Integral Linearity Error Differential Analog Input (Note 6)
l
–6.5 ±2 6.5 LSB
Differential Linearity Error Differential Analog Input
l
–0.9 ±0.5 0.9 LSB
Offset Error (Note 7)
l
–7 ±1.5 7 mV
Gain Error Internal Reference
External Reference
l
–1.8
±1.5
–0.5 0.8
%FS
%FS
Offset Drift ±10 µV/°C
Full-Scale Drift Internal Reference
External Reference
±30
±10
ppm/°C
ppm/°C
Gain Matching ±0.3 %FS
Offset Matching ±1.5 mV
Transition Noise 3.2 LSB
RMS