AD6623
GENERAL TIMING CHARACTERISTICS1, 2
Test
Level
AD6623AS
Typ
Parameter (Conditions)
Temp
Min
Max
Unit
CLK Timing Requirements:
tCLK
CLK Period
Full
Full
Full
I
IV
IV
9.6
3
3
ns
ns
ns
tCLKL
tCLKH
CLK Width Low
CLK Width High
0.5 × tCLK
RESET Timing Requirement:
tRESL
RESET Width Low
Full
I
30.0
ns
Input Data Timing Requirements:
tSI
INOUT[17:0], QIN to ↑CLK Setup Time
INOUT[17:0], QIN to ↑CLK Hold Time
Full
Full
IV
IV
1
2
ns
ns
tHI
Output Data Timing Characteristics:
tDO
↑CLK to OUT[17:0], INOUT[17:0],
QOUT Output Delay Time
Full
Full
IV
IV
2
3
6
7.5
ns
ns
tDZO
OEN HIGH to OUT[17:0] Active
SYNC Timing Requirements:
tSS
SYNC(0, 1, 2, 3) to ↑CLK Setup Time
Full
Full
IV
IV
1
2
ns
ns
tHS
SYNC(0, 1, 2, 3) to ↑CLK Hold Time
Master Mode Serial Port Timing Requirements (SCS = 0):
Switching Characteristics3
tDSCLK1
tDSCLKH
tDSCLKL
↑CLK to ↑SCLK Delay (divide by 1)
Full
IV
IV
4
5
10.5
13
ns
ns
↑CLK to ↑SCLK Delay (for any other divisor) Full
↑CLK to ↓SCLK Delay
(divide by 2 or even number)
↓CLK to ↓SCLK Delay
Full
Full
IV
IV
3.5
4
9
ns
ns
tDSCLKLL
(divide by 3 or odd number)
Channel is Self-Framing
10
tSSDI0
tHSDI0
tDSFO0A
SDIN to ↑SCLK Setup Time
SDIN to ↑SCLK Hold Time
↑SCLK to SDFO Delay
Full
Full
Full
IV
IV
IV
1.7
0
0.5
ns
ns
ns
3.5
Channel is External-Framing
SDFI to ↑SCLK Setup Time
SDFI to ↑SCLK Hold Time
SDIN to ↑SCLK Setup Time
SDIN to ↑SCLK Hold Time
↑SCLK to SDFO Delay
tSSFI0
Full
Full
Full
Full
Full
IV
IV
IV
IV
IV
2
0
2
0
ns
ns
ns
ns
ns
tHSFI0
tSSDI0
tHSDI0
tDSFO0B
0.5
3
Slave Mode Serial Port Timing Requirements (SCS = 1):
Switching Characteristics3
tSCLK
SCLK Period
Full
Full
Full
IV
IV
IV
2 ꢀ tCLK
ns
ns
ns
tSCLKL
tSCLKH
SCLK Low Time
SCLK High Time
3.5
3.5
Channel is Self-Framing
SDIN to ↑SCLK Setup Time
SDIN to ↑SCLK Hold Time
↑SCLK to SDFO Delay
Channel is External-Framing
SDFI to ↑ SCLK Setup Time
SDFI to ↑SCLK Hold Time
SDIN to ↑SCLK Setup Time
SDIN to ↑SCLK Hold Time
↓SCLK to SDFO Delay
tSSDH
tHSDH
tDSFO1
Full
Full
Full
IV
IV
IV
1
2.5
4
ns
ns
ns
10
tSSFI1
Full
Full
Full
Full
Full
IV
IV
IV
IV
IV
2
1
1
2.5
ns
ns
ns
ns
ns
tHSFI1
tSSDI1
tHSDI1
tDSFO1
NOTES
10
1All Timing Specifications valid over VDD range of 2.375 V to 2.675 V and VDDIO range of 3.0 V to 3.6 V.
2CLOAD = 40 pF on all outputs (unless otherwise specified).
3The timing parameters for SCLK, SDIN, SDFI, SDFO, and SYNC apply to all four channels (A, B, C, and D).
Specifications subject to change without notice.
–5–
REV. 0