AD7606/AD7606-6/AD7606-4
ꢀimit at TMIN, TMAX
Min Typ Max
Parameter
Unit Description
Delay from RD falling edge to FRSTDATA low
t27
19
24
ns
ns
VDRIVE = 3.3 V to 5.25V
VDRIVE = 2.3 V to 2.7V
Delay from 16th SCLK falling edge to FRSTDATA low
t28
17
22
24
ns
ns
ns
VDRIVE = 3.3 V to 5.25V
VDRIVE = 2.3 V to 2.7V
Delay from CS rising edge until FRSTDATA three-state enabled
t29
1 Sample tested during initial release to ensure compliance. All input signals are specified with tR = tF = 5 ns (10% to 90% of VDRIVE) and timed from a voltage level of 1.6 V.
2 In oversampling mode, typical tCONV for the AD7606-6 and AD7606-4 can be calculated using ((N × tCONV) + ((N − 1) × 1 μs)). N is the oversampling ratio. For the AD7606-6,
tCONV = 3 μs; and for the AD7606-4, tCONV = 2 μs.
3 The delay between the CONVST x signals was measured as the maximum time allowed while ensuring a <10 LSB performance matching between channel sets.
4 A buffer is used on the data output pins for these measurements, which is equivalent to a load of 20 pF on the output pins.
Timing Diagrams
t5
CONVST A,
CONVST B
tCYCLE
t2
CONVST A,
CONVST B
t3
tCONV
t1
BUSY
t4
CS
t7
tRESET
RESET
Figure 2. CONVST Timing—Reading After a Conversion
t5
CONVST A,
CONVST B
tCYCLE
t2
CONVST A,
CONVST B
t3
tCONV
t1
BUSY
t6
CS
t7
tRESET
RESET
Figure 3. CONVST Timing—Reading During a Conversion
CS
RD
t9
t8
t13
t11
t10
t16
t17
t14
V3
t15
V7
DATA:
DB[15:0]
INVALID
t24
V1
V2
t27
V4
V8
t26
t29
FRSTDATA
CS
RD
Pulses
Figure 4. Parallel Mode, Separate and
Rev. 0 | Page 9 of 36
ADI [ ADI ]
