AD6600ASTZ Analog Devices Inc, AD6600ASTZ Datasheet - Page 23

• Manufacturer Part Number: AD6600ASTZ
• Description: ADC Single 20MSPS 11-Bit Parallel 44-Pin LQFP
• Manufacturer: Analog Devices Inc

Specifications of AD6600ASTZ

• Package: 44LQFP
• Resolution: 11 Bit
• Sampling Rate: 20000 KSPS
• Number Of Adcs: 1
• Number Of Analog Inputs: 2
• Digital Interface Type: Parallel
• Input Type: Voltage
• Signal To Noise Ratio: 59(Typ) dB
• Sample And Hold: Yes
• Polarity Of Input Voltage: Bipolar
• Number Of Bits: 11
• Sampling Rate (per Second): 20M
• Data Interface: Parallel
• Number Of Converters: 1
• Power Dissipation (max): 976mW
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Connecting the AD6600 with the AD6620
The AD6600 interfaces directly to the AD6620 Digital Receive
Signal Processor as shown in Figure 31. No additional external
components are required. Note that the layout requirements dis-
cussed previously do apply and deviations can result in degraded
performance. The digital outputs of the AD6600 must connect
directly to the AD6620 inputs with no additional fanout. Addi-
tional loading on the outputs will compromise timing performance.
ENC
ENC
RSSI [2:0]
AB_OUT
D [10:0]
AD6600
CLK2
(MSB) D10
(LSB) D0
AB_OUT
CLK2
RSSI2
RSSI1
RSSI0
D9
D8
D7
D6
D5
D4
D3
D2
D1
38.5
IN15
IN14
IN13
IN12
IN11
IN10
IN9
IN8
IN7
IN6
IN5
IN4
IN3
IN2
IN1
IN0
EXP2
EXP1
EXP0
A/B
CLK
AD6620
3.0
7.0
38.5
16.5
Figure 32 shows the timing details between the AD6600 and the
AD6620. On Clock 1, D[10:0], RSSI[2:0], and AB_OUT are
captured by the AD6620. Since AB_OUT has changed state from
the previous clock, the D[10:0] and RSSI[2:0] are processed by
the AD6620. This clock allows adequate setup and hold time
for AB_OUT, D[10:0], and RSSI[2:0] to be captured by the
AD6620.
On Clock2, D[10:0], RSSI[2:0], and AB_OUT are captured
by the AD6620. Since AB_OUT has not changed from the
previous clock, the D[10:0] and RSSI[2:0] are ignored by the
AD6620. This clock is concerned only with the AB_OUT setup-
and-hold time.
CLOCK1
3.0
CLOCK2
16.5
12.5
AD6600