AD6644ASTZ-40 Analog Devices Inc, AD6644ASTZ-40 Datasheet - Page 12

• Manufacturer Part Number: AD6644ASTZ-40
• Description: IC ADC 14BIT 40MSPS CMOS 52-LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD6644ASTZ-40

• Data Interface: Parallel
• Number Of Bits: 14
• Sampling Rate (per Second): 40M
• Number Of Converters: 4
• Power Dissipation (max): 1.3W
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -25°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 52-LQFP
• Resolution (bits): 14bit
• Input Channel Type: Differential
• Supply Voltage Range - Analogue: 4.85V To 5.25V
• Supply Voltage Range - Digital: 3V To 3.6V
• Supply Current: 245mA
• Sampling Rate: 40MSPS
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD6644
EQUIVALENT CIRCUITS
ENCODE
V
REF
AV
AIN
AIN
CURRENT
CC
MIRROR
AV
10kΩ
10kΩ
CC
Figure 23. Compensation Pin, C1 or C2
V
V
V
V
Figure 22. ENCODE/ ENCODE Inputs
AV
CH
CL
CH
CL
CC
Figure 21. Analog Input Stage
AV
AV
CC
CC
AV
CC
500Ω
500Ω
LOADS
LOADS
C1 OR C2
BUF
BUF
BUF
AV
CC
AV
CC
10kΩ
10kΩ
TH
TH
V
REF
AV
CC
ENCODE
Rev. D | Page 12 of 24
2.4V
CURRENT
CURRENT
MIRROR
MIRROR
DV
Figure 26. Digital Output Stage
CC
10kΩ
10kΩ
Figure 25. DMID Reference
Figure 24. 2.4 V Reference
100µA
V
REF
AV
CC
DV
DMID
DV
AV
CC
CC
CC
D0 TO D13,
OVR, DRY
V
REF