LTC2259CUJ-14#TRPBF Linear Technology, LTC2259CUJ-14#TRPBF Datasheet - Page 14

• Manufacturer Part Number: LTC2259CUJ-14#TRPBF
• Description: IC ADC 14BIT 80MSPS 40-QFN
• Manufacturer: Linear Technology

Specifications of LTC2259CUJ-14#TRPBF

• Number Of Bits: 14
• Sampling Rate (per Second): 80M
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 105mW
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 40-WFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN FUNCTIONS
LTC2261-14
LTC2260-14/LTC2259-14
PINS THAT ARE THE SAME FOR ALL DIGITAL OUTPUT
MODES
A
A
GND (Pin 3): ADC Power Ground.
REFH (Pins 4, 5): ADC High Reference. Bypass to Pins
6, 7 with a 2.2μF ceramic capacitor and to ground with a
0.1μF ceramic capacitor.
14
TYPICAL PERFORMANCE CHARACTERISTICS
IN
IN
+
–
74
73
72
71
70
69
68
67
66
55
50
45
40
35
(Pin 1): Positive Differential Analog Input.
(Pin 2): Negative Differential Analog Input.
LTC2259-14: SNR vs Input
Frequency, –1dB, 2V Range,
80Msps
0
LTC2259-14: I
5MHz Sine Wave Input, –1dB
0
50
20
INPUT FREQUENCY (MHz)
LVDS OUTPUTS
100
SAMPLE RATE (Msps)
CMOS OUTPUTS
150
VDD
40
vs Sample Rate,
200
250
60
300
226114 G53
226114 G49
350
80
95
90
85
80
75
70
65
45
40
35
30
25
20
15
10
LTC2259-14: SFDR vs Input
Frequency, –1dB, 2V Range,
80Msps
5
0
0
0
LTC2259-14: I
5MHz Sine Wave Input, –1dB, 5pF
on Each Data Output
50
INPUT FREQUENCY (MHz)
100
20
SAMPLE RATE (Msps)
150
1.75mA LVDS
3.5mA LVDS
OVDD
1.8V CMOS
REFL (Pins 6, 7): ADC Low Reference. Bypass to Pins
4, 5 with a 2.2μF ceramic capacitor and to ground with a
0.1μF ceramic capacitor.
PAR/SER (Pin 8): Programming Mode Selection Pin. Con-
nect to ground to enable the serial programming mode.
CS, SCK, SDI, SDO become a serial interface that control
the A/D operating modes. Connect to V
parallel programming mode where CS, SCK, SDI become
parallel logic inputs that control a reduced set of the A/D
40
200
vs Sample Rate,
250
1.2V CMOS
60
300
226114 G50
226114 G54
350
80
110
100
80
70
60
50
40
30
20
10
90
0
74
73
72
71
70
69
68
67
66
–80
LTC2259-14: SFDR vs Input Level,
f
IN
0.6
LTC2259-14: SNR vs SENSE,
f
IN
= 70MHz, 2V Range, 80Msps
–70 –60 –50 –40 –30 –20 –10
= 5MHz, –1dB
0.7
INPUT LEVEL (dBFS)
0.8
SENSE PIN (V)
0.9
dBFS
DD
dBc
1
to enable the
1.1
226114 G52
1.2
226114fa
226114 G55
0
1.3