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TDA8757 Datasheet, PDF (26/37 Pages) NXP Semiconductors – Triple 8-bit ADC 170 Msps
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Philips Semiconductors
TDA8757
Triple 8-bit ADC 170 Msps
Table 17: Characteristics…continued
VCCA = 4.75 V to 5.25 V (referenced to AGND); VCCD = 4.75 V to 5.25 V (referenced to DGND); VDDD = 4.75 V to 5.25 V
(referenced to VSSD); VCCO = 4.75 V to 5.25 V (referenced to OGND); AGND, DGND, OGND and VSS connected together;
Tamb = 0 to 70 °C; typical values measured at VCCA = VDDD = VCCD = VCCO = 5 V and Tamb = 25 °C; unless otherwise
specified.
Symbol
Parameter
Conditions
Min Typ Max Unit
ENOB [2]
effective number of bits
−
7.4
−
bits
Signal-to-noise ratio
S/N
signal-to-noise ratio
fclk = 170 MHz
−
46
−
dB
Spurious free dynamic range
SFDR
spurious free dynamic range
fclk = 170 MHz
−
57
−
dB
Clock timing output (CKDATA)
ηext
fclk(max)
ADC clock duty factor
maximum clock frequency
45
50
55
%
−
−
170 MHz
Clock timing input (CKEXT)
fclk(max)
tCPH
tCPL
Data timing [3]
maximum clock frequency
clock pulse width HIGH
clock pulse width LOW
−
−
2.5
−
2.5
−
170 MHz
−
ns
−
ns
td(s)
tsu(d)(o)
th(o)
sampling delay time
output data set-up time
output hold time
all times referenced to 50% of −
−7.5 −
ns
the rising edge of CKDATA; see −
−7
−
ns
Figure 10
−
1
−
ns
3-state output delay time
tdZH
output enable HIGH
tdZL
output enable LOW
tdHZ
output disable HIGH
tdLZ
output disable LOW
−
15
−
ns
−
18
−
ns
−
13
−
ns
−
10
−
ns
Data and sync outputs
VOL
LOW-level output voltage
Io = 1 mA
−
−
0.4
V
VOH
HIGH-level output voltage
Io = 1 mA
2.4
−
−
V
IOL
LOW-level output current
VOL = 0.2 V
−
0.2
−
mA
IOH
HIGH-level output current
VOH = 3.4 V
−
0.3
−
mA
CL
load capacitance
−
10
−
pF
TTL digital inputs (CKREF, COAST, INV, HSYNC, CLP, PD, DIS, I2C/3W, OE, CKEXT)
VIL
LOW-level input voltage
VIH
HIGH-level input voltage
IIL
LOW-level input current
IIH
HIGH-level input current
Zi
input impedance
Ci
input capacitance
−
−
0.8
V
2.0
−
−
V
−
400
−
µA
−
35
−
µA
−
tbf
−
kΩ
−
tbf
−
pF
Sync on green input
Vsync(G)
sync on green pulse amplitude [4] Slevel = 0; see Figure 5
Slevel = 1; see Figure 5
300
−
150
−
600 mV
300 mV
9397 750 09457
Preliminary data
Rev. 07 — 28 February 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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