TDA8757 Datasheet, PDF (27/37 Pages) NXP Semiconductors – Triple 8-bit ADC 170 Msps

Philips Semiconductors
TDA8757
Triple 8-bit ADC 170 Msps
Table 17: Characteristics…continued
V_CCA = 4.75 V to 5.25 V (referenced to AGND); V_CCD = 4.75 V to 5.25 V (referenced to DGND); V_DDD = 4.75 V to 5.25 V
(referenced to V_SSD); V_CCO = 4.75 V to 5.25 V (referenced to OGND); AGND, DGND, OGND and V_SS connected together;
T_amb = 0 to 70 °C; typical values measured at V_CCA = V_DDD = V_CCD = V_CCO = 5 V and T_amb = 25 °C; unless otherwise
specified.
Symbol
Parameter
Conditions
Min Typ Max Unit
3W-bus
t_rst
reset time of the chip before
3-wire communication
−
600
−
ns
t_su
data set-up time for 3-wire
communication
−
100
−
ns
t_h
data hold time for 3-wire
communication
−
100
−
ns
I²C-bus ^[5]
V_IL
LOW-level input voltage
for SCL and SDA
V_IH
HIGH-level input voltage
for SCL and SDA;
V_PU = 5 V
for SCL and SDA;
V_PU = 3 V
f_SCL
clock frequency
t_BUF
time the bus must be free before
new transmission can start
−
−
3
−
0.7V_DD −
0
−
4.7
−
0.3V_DD V
−
V
−
100 kHz
−
µs
t_HD;STA
t_SU;STA
t_LOW
t_HIGH
t_SU;DAT
t_HD;DAT
t_r
t_f
t_SU;STO
C_b
start condition hold time
start condition set-up time
LOW-level clock period
HIGH-level clock period
data set-up time
data hold time
SDA and SCL rise time
SDA and SCL fall time
stop condition set-up time
bus line capacitive loading
repeated start
f_SCL = 100 kHz
f_SCL = 100 kHz
4.0
−
4.7
−
4.7
−
4.0
−
250
−
0
−
−
−
−
−
4.0
−
−
−
−
µs
−
µs
−
µs
−
µs
−
ns
−
ns
1.0
µs
300 ns
−
µs
400 pF
[1] From 25 to 70 °C, the edge of the clock CKDATA has a shift of 1 phase compared to CKREF.
[2] Effective bits are obtained from a Fast Fourier Transform (FFT) treatment taking 8000 acquisition points per equivalent fundamental
period. The calculation takes into account all harmonics and noise up to half clock frequency (NYQUIST frequency).
Conversion-to-noise ratio: S/N = EB × 6.02 + 1.76 dB.
[3] Output data acquisition: the output data is available after the maximum sampling delay time t_d(s). All the timings are given for a 10 pF
capacitive load.
[4] Pulse relative to the blank level.
[5] The I²C-bus timings are given for use of the bus at a frequency of 100 kbit/s (100 kHz). This bus could be used at a frequency of
400 kbit/s (400 kHz).
9397 750 09457
Preliminary data
Rev. 07 — 28 February 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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