
M
±5V, 1Gsps, 8-Bit ADC with
On-Chip 2.2GHz Trac k/Hold Amplifier
_______________________________________________________________________________________
9
Typic al Operating Charac teristic s (c ontinued)
(V
CC
A = V
CC
I = V
CC
D = +5V, V
EE
= -5V, V
CC
O = +3.3V, REFIN connected to REFOUT, f
S
= 1Gsps, T
A
= +25°C, unless otherwise
noted.)
DIFFERENTIAL NONLINEARITY
vs. OUTPUT CODE
(LOW-FREQUENCY SERVOLOOP DATA)
DATA OUTPUT RISE/FALL TIME
Pin Desc ription
-0.5
-0.2
-0.3
-0.4
-0.1
0
0.1
0.2
0.3
0.4
0.5
0
32
64
96
OUTPUT CODE
128 160 192 224
256
M
D
-70
-68
-69
-66
-67
-64
-65
-63
-61
-62
-60
-5.50
-5.30
-5.10
-4.90
-4.70
-4.50
TOTAL HARMONIC DISTORTION vs. V
EE
(f
IN
= 125MHz, -1dBFS)
M
V
EE
(V)
T
-70
-68
-69
-66
-67
-64
-65
-63
-61
-62
-60
4.50
4.70
4.90
5.10
5.30
5.50
TOTAL HARMONIC DISTORTION
vs. V
CC
I = V
CC
A = V
CC
D
(f
IN
= 125MHz, -1dBFS)
M
V
CC
(V)
T
500ps/div
DREADY RISE/FALL TIME,
DREADY
(200mV/div)
DATA
(200mV/div)
M
1.0
1.1
1.2
1.3
1.4
1.5
0
1000
500
ANALOG INPUT FREQUENCY (MHz)
1500
2000
2500
VSWR vs. ANALOG INPUT FREQUENCY
M
V
Test Point.
Do not connect.
TESTPOINT (T.P.)
A10, E17, F2, P3, R17, R18
A11, B11, B16, B17, C11, C16, U9, U17,
V9, V17, V18, W9
Digital Ground
GNDD
PECL Supply Voltage, +3V to +5V
V
CC
O
A12–A19, B19, C19, D19, E19, F19,
G19, H19, J 19, K19, L19, M19, N19,
P19, T19, U19, V19, W10-W19
Analog Supply Voltage, +5V. Supplies analog comparator array.
V
CC
A
A9, B9, C9, U7, V7, W7
Analog Ground. For comparator array.
GNDA
A8, B8, C8, U6, V6, W6
CONTACT
Analog Supply Voltage, +5V. Supplies T/H amplifier, clock distri-
bution, bandgap reference, and reference amplifier.
CC
I
A5, B5, C5, H2, H3, M2, M3, U5, V5, W5
Analog Ground. For T/H amplifier, clock distribution, bandgap
reference, and reference amplifier.
GNDI
A1–A4, A6, A7, B1, B2, C1, C2, D1, D2,
D3, G1, H1, J 2, J 3, K1–K3, L2, L3, M1,
N1, T2, T3, U1, V1, V2, W1–W4
FUNCTION
NAME